diff --git a/game.js b/game.js
index c4cc7d8..b7997a3 100644
--- a/game.js
+++ b/game.js
@@ -35,10 +35,10 @@ var BRANCHDOWN = {type:"BRANCH",direction:DOWN,color1:RED,color2:BLUE} //color 1
 var BRANCHLEFT = {type:"BRANCH",direction:LEFT,color1:RED,color2:BLUE}
 var BRANCHRIGHT = {type:"BRANCH",direction:RIGHT,color1:RED,color2:BLUE}
 var BRANCHUP = {type:"BRANCH",direction:UP,color1:RED,color2:BLUE}
-var WRITERDOWN = {type:"WRITER",direction:DOWN,color1:RED,color2:BLUE} //color 1 points left, color 2 points right
-var WRITERLEFT = {type:"WRITER",direction:LEFT,color1:RED,color2:BLUE}
-var WRITERRIGHT = {type:"WRITER",direction:RIGHT,color1:RED,color2:BLUE}
-var WRITERUP = {type:"WRITER",direction:UP,color1:RED,color2:BLUE}
+var WRITERDOWN = {type:"WRITER",direction:DOWN,color:RED/*overwrite - if turned on, the writer overwrites the current tape position instead of appending.*/}
+var WRITERLEFT = {type:"WRITER",direction:LEFT,color:RED}
+var WRITERRIGHT = {type:"WRITER",direction:RIGHT,color:RED}
+var WRITERUP = {type:"WRITER",direction:UP,color:RED}
 
 
 var lastGameUpdate = 0;
@@ -64,6 +64,12 @@ var LEVEL2 = [
 	[{},{...BRANCHRIGHT},{},{},{},],
 	[{},{...BELTRIGHT},{},{},{},], //RED
 	[{},{},{},{},{},],]
+var LEVEL3 = [
+	[{},{},{},{},{},],
+	[{},{...WRITERUP,overwrite:true},{},{},{},],
+	[{},{...WRITERDOWN},{},{},{},],
+	[{},{...BELTRIGHT},{},{},{},],
+	[{},{},{},{},{},],]
 
 var gameGrid= []
 
@@ -92,23 +98,29 @@ function runBot(testing) {
 			case DOWN:{nextSquare = gameGrid[++BOT_Y][BOT_X];}break;
 		}
 		if (nextSquare.direction!==undefined) {
-			
-			if (nextSquare.type==="BRANCH") {
-				//console.log("Branch found")
-				if (BOT_TAPE[0].color===nextSquare.color1) {
-					//console.log("Matches color1")
-					//Move towards left side of the branch.
-					BOT_DIR = LeftOf(nextSquare.direction)
-					ConsumeTape()
-				} else
-				if (BOT_TAPE[0].color===nextSquare.color2) {
-					//console.log("Matches color2")
-					//Move towards left side of the branch.
-					BOT_DIR = RightOf(nextSquare.direction)
-					ConsumeTape()
+			switch (nextSquare.type) {
+				case "BRANCH":{
+					//console.log("Branch found")
+					if (BOT_TAPE[0].color===nextSquare.color1) {
+						//console.log("Matches color1")
+						//Move towards left side of the branch.
+						BOT_DIR = LeftOf(nextSquare.direction)
+						ConsumeTape()
+					} else
+					if (BOT_TAPE[0].color===nextSquare.color2) {
+						//console.log("Matches color2")
+						//Move towards left side of the branch.
+						BOT_DIR = RightOf(nextSquare.direction)
+						ConsumeTape()
+					}
+				}break;
+				case "WRITER":{
+					AppendTape(nextSquare.color)
+					BOT_DIR = nextSquare.direction
+				}break;
+				default:{
+					BOT_DIR = nextSquare.direction
 				}
-			} else {
-				BOT_DIR = nextSquare.direction
 			}
 			//console.log("Direction is now "+BOT_DIR)
 		} else {
@@ -176,6 +188,9 @@ function draw() {
 function ConsumeTape() {
 	BOT_TAPE.shift()
 }
+function AppendTape(col) {
+	BOT_TAPE.push({color:col})
+}
 
 function LeftOf(dir) {
 	return (dir+1)%4
diff --git a/game.test.js b/game.test.js
index eb9ba12..fd78cef 100644
--- a/game.test.js
+++ b/game.test.js
@@ -10,12 +10,16 @@ function loadScript(url, callback)
 }
 
 var testsPass=undefined;
+var TestSuite;
 
 class describe {
 	constructor(testname) {
 		this.testname=testname
 		this.beforecb = undefined;
 		this.cb = undefined;
+		this.totaltests = 0;
+		this.passedtests = 0;
+		this.starttime = 0;
 		console.log(this.testname)
 	}
 	
@@ -25,6 +29,7 @@ class describe {
 	}
 	
 	it = (checkname,cb)=>{
+		this.starttime = new Date().getTime()
 		console.log("->"+checkname)
 		this.beforecb()
 		this.cb=cb;
@@ -35,11 +40,14 @@ class describe {
 
 function expect(testval1,testval2,test) {
 	if (testval1!==testval2) {
-		console.log("    Test Failed!")
+		console.log("    Test Failed!"+" ("+(new Date().getTime()-TestSuite.starttime)+"ms)")
+		TestSuite.totaltests++
 		testsPass=false
 	} else 
 	{
-		console.log("    Test Passed!")
+		TestSuite.totaltests++
+		TestSuite.passedtests++
+		console.log("    Test Passed!"+" ("+(new Date().getTime()-TestSuite.starttime)+"ms)")
 	}
 }
 
@@ -56,7 +64,8 @@ function AllBlankSpaces(level) {
 
 function runTests() {
 	console.log("Running test suite...")
-	new describe("Bot moving")
+	TestSuite = new describe("Bot moving")
+	TestSuite
 	.beforeEach(()=>{
 		gameGrid=[]
 		gameState=WAITING
@@ -68,12 +77,9 @@ function runTests() {
 		lastGameUpdate=0
 	})
 	.it("Blank level exists.",()=>{
-		var starttime = new Date().getTime()
 		expect(AllBlankSpaces(LEVEL0),true)
-		console.log("    ("+(new Date().getTime()-starttime)+"ms)")
 	})
 	.it("Bot moves to the right initially.",()=>{
-		var starttime = new Date().getTime()
 		expect(function(){
 			gameGrid=createGrid(5,5)
 			placeBot(0,2)
@@ -84,10 +90,8 @@ function runTests() {
 				return false
 			}
 		}(),true)
-		console.log("    ("+(new Date().getTime()-starttime)+"ms)")
 	})
 	.it("Bot obeys conveyor belt rules",()=>{
-		var starttime = new Date().getTime()
 		expect(function(){
 			loadLevel(LEVEL1,0,2)
 			for (var i=0;i<11;i++) {runBot(true)}
@@ -97,10 +101,8 @@ function runTests() {
 				return false
 			}
 		}(),true)
-		console.log("    ("+(new Date().getTime()-starttime)+"ms)")
 	})
 	.it("Bot obeys branch rules",()=>{
-		var starttime = new Date().getTime()
 		expect(function(){
 			loadLevel(LEVEL2,0,2)
 			for (var i=0;i<3;i++) {runBot(true)}
@@ -110,10 +112,8 @@ function runTests() {
 				return false
 			}
 		}(),true)
-		console.log("    ("+(new Date().getTime()-starttime)+"ms)")
 	})
 	.it("Bot obeys branch rules with different colored tape.",()=>{
-		var starttime = new Date().getTime()
 		expect(function(){
 			loadLevel(LEVEL2,0,2)
 			BOT_TAPE = [{color:BLUE}]
@@ -124,9 +124,57 @@ function runTests() {
 				return false
 			}
 		}(),true)
-		console.log("    ("+(new Date().getTime()-starttime)+"ms)")
 	})
+	.it("Bot tape is reduced by 1 when passing through a branch.",()=>{
+		expect(function(){
+			loadLevel(LEVEL2,0,2)
+			for (var i=0;i<3;i++) {runBot(true)}
+			if (BOT_TAPE.length===1&&BOT_TAPE[0].color===BLUE) {
+				return true
+			} else {
+				return false
+			}
+		}(),true)
+	})
+	.it("Bot tape is reduced by 1 when passing through a different branch.",()=>{
+		expect(function(){
+			loadLevel(LEVEL2,0,2)
+			BOT_TAPE = [{color:BLUE}]
+			for (var i=0;i<3;i++) {runBot(true)}
+			if (BOT_TAPE.length===0) {
+				return true
+			} else {
+				return false
+			}
+		}(),true)
+	})
+	.it("Bot obeys writer movement rules",()=>{
+		expect(function(){
+			loadLevel(LEVEL3,0,2)
+			for (var i=0;i<3;i++) {runBot(true)}
+			if (BOT_X===2&&BOT_Y===3) {
+				return true
+			} else {
+				return false
+			}
+		}(),true)
+	})
+	.it("Bot obeys writer tape rules - Has correct tape when appending",()=>{
+		expect(function(){
+			loadLevel(LEVEL3,0,2)
+			for (var i=0;i<3;i++) {runBot(true)}
+			if (BOT_TAPE.length===3&&BOT_TAPE[2].color===RED) {
+				return true
+			} else {
+				return false
+			}
+		}(),true)
+	})
+	
 	
+	console.log("==============")
+	console.log("TEST RESULTS: "+TestSuite.passedtests+" passed, "+(TestSuite.totaltests-TestSuite.passedtests)+" failed, "+TestSuite.totaltests+" total")
+	console.log("==============")
 	if (testsPass===undefined) {
 		testsPass=true
 	}