diff --git a/.eslintrc.json b/.eslintrc.json
index 201db55..a9ce638 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -15,6 +15,7 @@
       "ignoreRegExpLiterals": true}],
     "@typescript-eslint/triple-slash-reference": "off",
     "@typescript-eslint/no-unused-vars": "off",
+    "@typescript-eslint/no-inferrable-types": "warn",
     "@typescript-eslint/array-type": ["warn", {"default": "array-simple"}],
     "@typescript-eslint/consistent-indexed-object-style": ["warn", "index-signature"],
     "@typescript-eslint/consistent-type-assertions": ["warn", {
diff --git a/src/main.ts b/src/main.ts
index 757b685..9aedb3b 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -27,7 +27,7 @@ function startGame (state: GameState, renderer: IRenderer): void {
 
 // run with default config at startup
 ((): void => {
-  const config: GameConfig = new GameConfig();
+  const config = new GameConfig();
 
   // debug values to make the game play faster while testing
   config.cfgTitheAmount = 1000;
@@ -36,8 +36,8 @@ function startGame (state: GameState, renderer: IRenderer): void {
   config.cfgCredibilityRestoreRate = 5;
   config.cfgPastorRecruitRate = 0.5;
 
-  const renderer: IRenderer = new DebugRenderer();
-  const state: GameState = config.generateState();
+  const renderer = new DebugRenderer();
+  const state = config.generateState();
 
   // re-run main loop immediately on user clicks
   state.onResourceClick.push((): void => {
diff --git a/src/model/GameConfig.ts b/src/model/GameConfig.ts
index f404e82..45ea19f 100644
--- a/src/model/GameConfig.ts
+++ b/src/model/GameConfig.ts
@@ -38,7 +38,7 @@ class GameConfig {
   public cfgPastorRecruitRate = 0.01;
 
   public generateState (): GameState {
-    const state: GameState = new GameState(this);
+    const state = new GameState(this);
 
     // create player organization
     state.addResource('plorg', new PlayerOrg());
diff --git a/src/model/GameState.ts b/src/model/GameState.ts
index 40f4e65..37c7137 100644
--- a/src/model/GameState.ts
+++ b/src/model/GameState.ts
@@ -7,11 +7,11 @@ class GameState {
 
   public now = 0;
 
-  private readonly _versionMaj: number = 0;
-  private readonly _versionMin: number = 1;
+  private readonly _versionMaj = 0;
+  private readonly _versionMin = 1;
 
   private _timeSinceSave = 0;
-  private readonly _timeBetweenSaves: number = 10000;
+  private readonly _timeBetweenSaves = 10000;
 
   private _resources: { [key: string]: IResource } = { };
   private readonly _resourceKeys: string[] = [];
diff --git a/src/model/logging/DebugLogger.ts b/src/model/logging/DebugLogger.ts
index d71f52b..b0b68db 100644
--- a/src/model/logging/DebugLogger.ts
+++ b/src/model/logging/DebugLogger.ts
@@ -6,7 +6,7 @@ class DebugLogger implements ILogger {
   }
 
   public msg (text: string): void {
-    const p: HTMLElement = document.createElement('p');
+    const p = document.createElement('p');
     p.innerText = text;
     this._container.appendChild(p);
     if (this._container.parentElement !== null) {
diff --git a/src/model/resource/BuildingPermit.ts b/src/model/resource/BuildingPermit.ts
index 9ef6cba..2ed0bd4 100644
--- a/src/model/resource/BuildingPermit.ts
+++ b/src/model/resource/BuildingPermit.ts
@@ -9,7 +9,7 @@ class BuildingPermit extends Research {
 
   public isUnlocked (state: GameState): boolean {
     if (this._isUnlocked) return true;
-    const compounds: IResource = state.getResource('cmpnd');
+    const compounds = state.getResource('cmpnd');
     if (compounds.value > 0) {
       this._isUnlocked = true;
     }
diff --git a/src/model/resource/Church.ts b/src/model/resource/Church.ts
index 48dcddc..f95d217 100644
--- a/src/model/resource/Church.ts
+++ b/src/model/resource/Church.ts
@@ -13,7 +13,7 @@ class Church extends Infrastructure {
 
   public isUnlocked (state: GameState): boolean {
     if (this._isUnlocked) return true;
-    const compounds: IResource = state.getResource('cmpnd');
+    const compounds = state.getResource('cmpnd');
     if (compounds.value > 0) {
       this._isUnlocked = true;
     }
diff --git a/src/model/resource/Compound.ts b/src/model/resource/Compound.ts
index 113b133..14025d9 100644
--- a/src/model/resource/Compound.ts
+++ b/src/model/resource/Compound.ts
@@ -10,7 +10,7 @@ class Compound extends Infrastructure {
 
   public isUnlocked (state: GameState): boolean {
     if (this._isUnlocked) return true;
-    const tents: IResource = state.getResource('tents');
+    const tents = state.getResource('tents');
     if (tents.value >= 5) {
       this._isUnlocked = true;
     }
diff --git a/src/model/resource/House.ts b/src/model/resource/House.ts
index 8e92233..48618d4 100644
--- a/src/model/resource/House.ts
+++ b/src/model/resource/House.ts
@@ -14,7 +14,7 @@ class House extends Infrastructure {
 
   public isUnlocked (state: GameState): boolean {
     if (this._isUnlocked) return true;
-    const compounds: IResource = state.getResource('cmpnd');
+    const compounds = state.getResource('cmpnd');
     if (compounds.value > 0) {
       this._isUnlocked = true;
     }
diff --git a/src/model/resource/Infrastructure.ts b/src/model/resource/Infrastructure.ts
index 7fb19ff..1ec1e88 100644
--- a/src/model/resource/Infrastructure.ts
+++ b/src/model/resource/Infrastructure.ts
@@ -1,5 +1,5 @@
 /// <reference path="./Purchasable.ts" />
 
 abstract class Infrastructure extends Purchasable {
-  public readonly resourceType: ResourceType = ResourceType.infrastructure;
+  public readonly resourceType = ResourceType.infrastructure;
 }
diff --git a/src/model/resource/Job.ts b/src/model/resource/Job.ts
index 2144060..206d30f 100644
--- a/src/model/resource/Job.ts
+++ b/src/model/resource/Job.ts
@@ -1,10 +1,10 @@
 /// <reference path="./IResource.ts" />
 
 abstract class Job implements IResource {
-  public readonly resourceType: ResourceType = ResourceType.job;
-  public readonly valueInWholeNumbers: boolean = true;
-  public readonly clickText: string = 'Hire';
-  public readonly clickDescription: string = 'Promote one of your followers.';
+  public readonly resourceType = ResourceType.job;
+  public readonly valueInWholeNumbers = true;
+  public readonly clickText = 'Hire';
+  public readonly clickDescription = 'Promote one of your followers.';
   public value = 0;
   public readonly cost: { [key: string]: number } = { };
 
@@ -49,15 +49,15 @@ abstract class Job implements IResource {
 
   protected _availableJobs (state: GameState): number {
     // number of followers minus the number of filled jobs
-    const followers: number = state.getResource('plorg').value;
-    const hired: number = state.getResources().reduce(
+    const followers = state.getResource('plorg').value;
+    const hired = state.getResources().reduce(
       (tot: number, rkey: string): number => {
-        const res: IResource = state.getResource(rkey);
+        const res = state.getResource(rkey);
         return res.resourceType === ResourceType.job
           ? tot + res.value
           : tot;
       }, 0);
-    let max: number = followers - hired;
+    let max = followers - hired;
     if (max < 0) max = 0;
     return max;
   }
diff --git a/src/model/resource/MegaChurch.ts b/src/model/resource/MegaChurch.ts
index 498e819..11f6d0f 100644
--- a/src/model/resource/MegaChurch.ts
+++ b/src/model/resource/MegaChurch.ts
@@ -13,7 +13,7 @@ class MegaChurch extends Infrastructure {
 
   public isUnlocked (state: GameState): boolean {
     if (this._isUnlocked) return true;
-    const permit: IResource = state.getResource('blpmt');
+    const permit = state.getResource('blpmt');
     if (permit.value > 0) {
       this._isUnlocked = true;
     }
diff --git a/src/model/resource/Money.ts b/src/model/resource/Money.ts
index 71b4840..80c4950 100644
--- a/src/model/resource/Money.ts
+++ b/src/model/resource/Money.ts
@@ -1,7 +1,7 @@
 /// <reference path="./Purchasable.ts" />
 
 class Money extends Purchasable {
-  public readonly resourceType: ResourceType = ResourceType.consumable;
+  public readonly resourceType = ResourceType.consumable;
 
   private _lastCollectionTime = 0;
 
@@ -16,7 +16,7 @@ class Money extends Purchasable {
   }
 
   public max: (state: GameState) => number = (state: GameState) => {
-    let max: number = state.config.cfgStartingMoneyMax;
+    let max = state.config.cfgStartingMoneyMax;
     max += state.getResource('cmpnd').value * 500000;
     return max;
   };
@@ -32,24 +32,24 @@ class Money extends Purchasable {
   };
 
   protected _purchaseAmount (state: GameState): number {
-    const plorg: IResource = state.getResource('plorg');
+    const plorg = state.getResource('plorg');
     if (plorg.value === 0) {
       state.log('You have no followers to collect from!');
       return 0;
     }
-    const diff: number = state.now - this._lastCollectionTime;
+    const diff = state.now - this._lastCollectionTime;
     if (diff < state.config.cfgTimeBetweenTithes) {
-      const lost: number = state.config.cfgTimeBetweenTithes / diff / 3;
+      const lost = state.config.cfgTimeBetweenTithes / diff / 3;
       state.getResource('creds').addValue(lost * -1, state);
     }
     // each follower gives you $10
-    const tithings: number = plorg.value * state.config.cfgTitheAmount;
+    const tithings = plorg.value * state.config.cfgTitheAmount;
     this._lastCollectionTime = state.now;
     return tithings;
   }
 
   protected _purchaseLog (amount: number, state: GameState): string {
-    const followers: number = state.getResource('plorg').value;
+    const followers = state.getResource('plorg').value;
     return `You collected $${state.formatNumber(amount)} from ${state.formatNumber(followers)} followers.`;
   }
 }
diff --git a/src/model/resource/Passive.ts b/src/model/resource/Passive.ts
index 0f6c376..5d1809d 100644
--- a/src/model/resource/Passive.ts
+++ b/src/model/resource/Passive.ts
@@ -1,18 +1,19 @@
 /// <reference path="./IResource.ts" />
 
 abstract class Passive implements IResource {
-  public readonly resourceType: ResourceType = ResourceType.passive;
-  public readonly valueInWholeNumbers: boolean = false;
-  public readonly clickText: null = null;
-  public readonly clickDescription: null = null;
+  public readonly resourceType = ResourceType.passive;
+  public readonly valueInWholeNumbers = false;
+  public readonly clickText = null;
+  public readonly clickDescription = null;
   public value = 0;
-  public readonly cost: null = null;
+  public readonly cost = null;
 
-  public readonly clickAction: null = null;
+  public readonly clickAction = null;
 
   public max: ((state: GameState) => number) | null = null;
   public inc: ((state: GameState) => number) | null = null;
-  public advanceAction: ((time: number, state: GameState) => void) | null = null;
+  public advanceAction: (
+    (time: number, state: GameState) => void) | null = null;
 
   constructor (
     public readonly name: string,
diff --git a/src/model/resource/Pastor.ts b/src/model/resource/Pastor.ts
index 8a56e80..1e243c0 100644
--- a/src/model/resource/Pastor.ts
+++ b/src/model/resource/Pastor.ts
@@ -9,7 +9,7 @@ class Pastor extends Job {
   }
 
   public max: (state: GameState) => number = (state) => {
-    let max: number = state.getResource('chrch').value * 2;
+    let max = state.getResource('chrch').value * 2;
     max += state.getResource('mchch').value * 5;
     return max;
   };
@@ -23,13 +23,13 @@ class Pastor extends Job {
   public advanceAction (time: number, state: GameState): void {
     this._timeSinceLastTithe += time;
     if (this._timeSinceLastTithe >= state.config.cfgTimeBetweenTithes) {
-      const money: IResource = state.getResource('money');
-      const plorg: IResource = state.getResource('plorg');
+      const money = state.getResource('money');
+      const plorg = state.getResource('plorg');
       // each pastor can collect from up to 100 followers
-      let tithed: number = this.value * 100;
+      let tithed = this.value * 100;
       if (Math.floor(plorg.value) < tithed)
         tithed = Math.floor(plorg.value);
-      let collected: number = tithed * state.config.cfgTitheAmount;
+      let collected = tithed * state.config.cfgTitheAmount;
       if (money.max !== null && collected > money.max(state) - money.value)
         collected = money.max(state) - money.value;
       if (collected > 0) {
diff --git a/src/model/resource/PlayerOrg.ts b/src/model/resource/PlayerOrg.ts
index ed4f3a3..8b130c0 100644
--- a/src/model/resource/PlayerOrg.ts
+++ b/src/model/resource/PlayerOrg.ts
@@ -1,14 +1,14 @@
 /// <reference path="./IResource.ts" />
 
 class PlayerOrg implements IResource {
-  public readonly resourceType: ResourceType = ResourceType.religion;
-  public readonly name: string = 'Player';
-  public readonly description: string = 'In you they trust.';
-  public readonly valueInWholeNumbers: boolean = true;
-  public readonly clickText: string = 'Recruit';
-  public readonly clickDescription: string = 'Gather new followers.';
+  public readonly resourceType = ResourceType.religion;
+  public readonly name = 'Player';
+  public readonly description = 'In you they trust.';
+  public readonly valueInWholeNumbers = true;
+  public readonly clickText = 'Recruit';
+  public readonly clickDescription = 'Gather new followers.';
   public value = 0;
-  public readonly cost: null = null;
+  public readonly cost = null;
 
   private _timeSinceLastLost = 0;
   private _lastRecruitmentLog = 0;
@@ -16,7 +16,7 @@ class PlayerOrg implements IResource {
   private _followerDests: { [key: string]: number } = { };
 
   public max (state: GameState): number {
-    let max: number = state.config.cfgStartingPlayerMax;
+    let max = state.config.cfgStartingPlayerMax;
     max += state.getResource('tents').value * 2;
     max += state.getResource('house').value * 10;
     return max;
@@ -44,9 +44,9 @@ class PlayerOrg implements IResource {
     }
 
     // chance to fail increases as credibility decreases
-    const creds: IResource = state.getResource('creds');
+    const creds = state.getResource('creds');
     if (creds.max !== null) {
-      const ratio: number = Math.ceil(creds.value) / creds.max(state);
+      const ratio = Math.ceil(creds.value) / creds.max(state);
       if (Math.random() > ratio) {
         state.log('Your recruitment efforts failed.');
         return;
@@ -75,9 +75,9 @@ class PlayerOrg implements IResource {
     } else {
       // lost followers must return to other faiths
       for (let i = 0; i < diff * -1; i++) {
-        const dest: [string, IResource] = this._getRandomReligion(state);
+        const dest = this._getRandomReligion(state);
         dest[1].addValue(1, state);
-        const curFollowers: number = this._followerDests[dest[0]];
+        const curFollowers = this._followerDests[dest[0]];
         this._followerDests[dest[0]] = !isNaN(curFollowers)
           ? curFollowers + 1
           : 1;
@@ -96,9 +96,9 @@ class PlayerOrg implements IResource {
       if (this.value > 0) {
         const creds = state.getResource('creds');
         if (creds.max !== null) {
-          const ratio: number = Math.ceil(creds.value) / creds.max(state);
+          const ratio = Math.ceil(creds.value) / creds.max(state);
           if (Math.random() > ratio) {
-            const lost: number = Math.ceil(this.value / 25 * (1 - ratio));
+            const lost = Math.ceil(this.value / 25 * (1 - ratio));
             this.addValue(lost * -1, state);
           }
         }
@@ -115,7 +115,7 @@ class PlayerOrg implements IResource {
         let total = 0;
         for (const rkey of Object.keys(this._followerDests)) {
           if (msg !== '') msg += ', ';
-          const religion: IResource = state.getResource(rkey);
+          const religion = state.getResource(rkey);
           msg += `${state.formatNumber(this._followerDests[rkey])} to ${religion.name}`;
           total += this._followerDests[rkey];
           delete this._followerDests[rkey];
@@ -127,7 +127,7 @@ class PlayerOrg implements IResource {
         let total = 0;
         for (const rkey of Object.keys(this._followerSources)) {
           if (msg !== '') msg += ', ';
-          const religion: IResource = state.getResource(rkey);
+          const religion = state.getResource(rkey);
           msg +=
             `${state.formatNumber(this._followerSources[rkey])} from ${religion.name}`;
           total += this._followerSources[rkey];
@@ -140,9 +140,9 @@ class PlayerOrg implements IResource {
   }
 
   private _getRandomReligion (state: GameState): [string, IResource] {
-    const religs: string[] = ['xtian', 'islam', 'hindu',
+    const religs = ['xtian', 'islam', 'hindu',
       'buddh', 'sikhi', 'judah', 'other', 'agnos'];
-    const source: string = religs[Math.floor(Math.random() * 8)];
+    const source = religs[Math.floor(Math.random() * 8)];
     return [source, state.getResource(source)];
   }
 }
diff --git a/src/model/resource/Purchasable.ts b/src/model/resource/Purchasable.ts
index e943638..42c4229 100644
--- a/src/model/resource/Purchasable.ts
+++ b/src/model/resource/Purchasable.ts
@@ -23,7 +23,7 @@ abstract class Purchasable implements IResource {
   public clickAction (state: GameState): void {
     if (this.max !== null && this.value >= this.max(state)) return;
     if (state.deductCost(this.cost)) {
-      const amount: number = this._purchaseAmount(state);
+      const amount = this._purchaseAmount(state);
       if (amount > 0) {
         this.value += amount;
         state.log(this._purchaseLog(amount, state));
@@ -45,15 +45,15 @@ abstract class Purchasable implements IResource {
     return this._isUnlocked;
   }
 
-  public advanceAction (time: number, state: GameState): void {
+  public advanceAction (_time: number, _state: GameState): void {
     return;
   }
 
-  protected _purchaseAmount (state: GameState): number {
+  protected _purchaseAmount (_state: GameState): number {
     return 1;
   }
 
-  protected _purchaseLog (amount: number, state: GameState): string {
+  protected _purchaseLog (amount: number, _state: GameState): string {
     return `You purchased ${amount} x ${this.name}.`;
   }
 }
diff --git a/src/model/resource/Religion.ts b/src/model/resource/Religion.ts
index c513955..5e10791 100644
--- a/src/model/resource/Religion.ts
+++ b/src/model/resource/Religion.ts
@@ -1,16 +1,16 @@
 /// <reference path="./IResource.ts" />
 
 class Religion implements IResource {
-  public readonly resourceType: ResourceType = ResourceType.religion;
-  public readonly valueInWholeNumbers: boolean = true;
-  public readonly clickText: null = null;
-  public readonly clickDescription: null = null;
-  public readonly cost: null = null;
+  public readonly resourceType = ResourceType.religion;
+  public readonly valueInWholeNumbers = true;
+  public readonly clickText = null;
+  public readonly clickDescription = null;
+  public readonly cost = null;
 
-  public readonly max: null = null;
-  public readonly inc: null = null;
-  public readonly clickAction: null = null;
-  public readonly advanceAction: null = null;
+  public readonly max = null;
+  public readonly inc = null;
+  public readonly clickAction = null;
+  public readonly advanceAction = null;
 
   constructor (
     public readonly name: string,
diff --git a/src/model/resource/Research.ts b/src/model/resource/Research.ts
index 84c86a4..8d3567f 100644
--- a/src/model/resource/Research.ts
+++ b/src/model/resource/Research.ts
@@ -1,7 +1,7 @@
 /// <reference path="./Purchasable.ts" />
 
 abstract class Research extends Purchasable {
-  public readonly resourceType: ResourceType = ResourceType.research;
+  public readonly resourceType = ResourceType.research;
 
   constructor (
     public readonly name: string,
@@ -13,5 +13,5 @@ abstract class Research extends Purchasable {
     this.clickDescription = 'Complete this research.';
   }
 
-  public max: (_state: GameState) => number = (_state) => 1;
+  public max: (state: GameState) => number = (_state) => 1;
 }
diff --git a/src/model/resource/Tent.ts b/src/model/resource/Tent.ts
index 5602c69..ca26272 100644
--- a/src/model/resource/Tent.ts
+++ b/src/model/resource/Tent.ts
@@ -10,7 +10,7 @@ class Tent extends Infrastructure {
 
   public max: (state: GameState) => number = (state) => {
     // ten extra tents per compound
-    let max: number = state.config.cfgStartingTentMax;
+    let max = state.config.cfgStartingTentMax;
     max += state.getResource('cmpnd').value * 10;
     return max;
   };