diff --git a/assets/button.png b/assets/button.png
index f0beb52..5f9fa44 100644
Binary files a/assets/button.png and b/assets/button.png differ
diff --git a/assets/sandbox_incdec.png b/assets/sandbox_incdec.png
new file mode 100644
index 0000000..cb7adce
Binary files /dev/null and b/assets/sandbox_incdec.png differ
diff --git a/assets/sandbox_tabs.png b/assets/sandbox_tabs.png
index 69fcd36..20544fa 100644
Binary files a/assets/sandbox_tabs.png and b/assets/sandbox_tabs.png differ
diff --git a/css/slides.css b/css/slides.css
index 791effa..d45d1a0 100644
--- a/css/slides.css
+++ b/css/slides.css
@@ -129,6 +129,12 @@ body{
 	background: url(../assets/sandbox_tabs.png);
 	width:500px; height:470px;
 	background-size: auto 100%;
+
+	-webkit-user-select: none;  /* Chrome all / Safari all */
+	-moz-user-select: none;     /* Firefox all */
+	-ms-user-select: none;      /* IE 10+ */
+	user-select: none; 
+	cursor: default;
 }
 #sandbox_tabs > div{
 	position: absolute;
@@ -144,6 +150,33 @@ body{
 	left: 33px;
 	top: 80px;
 }
+.incdec{
+	width: 0; height: 0;
+	position: absolute;
+}
+.incdec > div{
+	position: absolute;
+}
+.incdec > .incdec_num{
+	width:50px; height:50px;
+	font-size: 25px;
+	text-align: center;
+    top: -16px;
+    left: -25px;
+    cursor: default;
+}
+.incdec > .incdec_control{
+	left:-10px;
+	width:20px; height:20px;
+	background: url(../assets/sandbox_incdec.png);
+	background-size: auto 100%;
+	cursor: pointer;
+}
+.incdec > .incdec_control[arrow=up]{ top:-35px; background-position:0px 0px; }
+.incdec > .incdec_control[arrow=up]:hover{ background-position:-20px 0px; }
+.incdec > .incdec_control[arrow=down]{ bottom:-35px; background-position:-40px 0px; }
+.incdec > .incdec_control[arrow=down]:hover{ background-position:-60px 0px; }
+
 
 /*************************/
 /***** SLIDE SELECT ******/
diff --git a/index.html b/index.html
index 69a9fa6..4c0bc97 100644
--- a/index.html
+++ b/index.html
@@ -22,7 +22,7 @@
 <script src="js/lib/pixi.min.js"></script>
 <script>var createjs = window;</script>
 <script src="js/lib/tweenjs-0.6.2.min.js"></script>
-<script>Ticker.framerate=60;</script>
+<script>Ticker.framerate=60; Ticker.paused=true;</script>
 
 <!-- Core Engine -->
 <script src="js/core/Loader.js"></script>
@@ -31,6 +31,7 @@
 <script src="js/core/Button.js"></script>
 <script src="js/core/TextBox.js"></script>
 <script src="js/core/Words.js"></script>
+<script src="js/core/IncDecNumber.js"></script>
 
 <!-- Simulations -->
 <script src="js/sims/PD.js"></script>
diff --git a/js/core/Button.js b/js/core/Button.js
index 9624cc6..282aa14 100644
--- a/js/core/Button.js
+++ b/js/core/Button.js
@@ -25,9 +25,12 @@ function Button(config){
 	button.style.left = config.x+"px";
 	button.style.top = config.y+"px";
 	config.upperCase = (config.upperCase===undefined) ? true : config.upperCase;
-	var words = Words.get(config.text_id);
-	if(config.upperCase) words=words.toUpperCase();
-	text.innerHTML = words;
+	self.setText = function(text_id){
+		var words = Words.get(text_id);
+		if(config.upperCase) words=words.toUpperCase();
+		text.innerHTML = words;
+	};
+	self.setText(config.text_id);
 
 	// On hover...
 	hitbox.onmouseover = function(){
@@ -39,7 +42,10 @@ function Button(config){
 
 	// On click...
 	hitbox.onclick = function(){
-		if(self.active) publish(config.message);
+		if(self.active){
+			if(config.onclick) config.onclick();
+			if(config.message) publish(config.message);
+		}
 	};
 
 	// Activate/Deactivate
diff --git a/js/core/IncDecNumber.js b/js/core/IncDecNumber.js
new file mode 100644
index 0000000..2d141b3
--- /dev/null
+++ b/js/core/IncDecNumber.js
@@ -0,0 +1,81 @@
+/*****************************
+
+{
+	x:x, y:y, max:5, min:-5,
+	value: PD.PAYOFFS_DEFAULT[letter],
+	onchange: function(value){
+		publish("pd/editPayoffs/"+letter,[value]);
+	}
+}
+
+*****************************/
+function IncDecNumber(config){
+
+	var self = this;
+	self.id = config.id;
+
+	// Properties
+	self.value = config.value;
+
+	// Create DOM
+	var dom = document.createElement("div");
+	dom.className = "incdec";
+	dom.style.left = config.x+"px";
+	dom.style.top = config.y+"px";
+	self.dom = dom;
+
+	// Number
+	var num = document.createElement("div");
+	num.className = "incdec_num";
+	dom.appendChild(num);
+	self.setValue = function(value){
+
+		// Bounds
+		if(value>config.max) value=config.max;
+		if(value<config.min) value=config.min;
+
+		// Value & UI
+		self.value = value;
+		num.innerHTML = self.value;
+
+	};
+	self.setValue(config.value);
+
+	// Two buttons
+	var up = document.createElement("div");
+	up.className = "incdec_control";
+	up.setAttribute("arrow","up");
+	up.onclick = function(){
+		self.setValue(self.value+1);
+		self.onchange(self.value);
+	};
+	dom.appendChild(up);
+
+	var down = document.createElement("div");
+	down.className = "incdec_control";
+	down.setAttribute("arrow","down");
+	down.onclick = function(){
+		self.setValue(self.value-1);
+		self.onchange(self.value);
+	};
+	dom.appendChild(down);
+
+	// On Change...
+	self.onchange = function(value){
+		config.onchange(value);
+	};
+
+	///////////////////////////////////////
+	///////////////////////////////////////
+
+	// Add...
+	self.add = function(INSTANT){
+		return _addFade(self, INSTANT);
+	};
+
+	// Remove...
+	self.remove = function(INSTANT){
+		return _removeFade(self, INSTANT);
+	};
+
+}
\ No newline at end of file
diff --git a/js/lib/helpers.js b/js/lib/helpers.js
index 59ee78e..c9ae8d7 100644
--- a/js/lib/helpers.js
+++ b/js/lib/helpers.js
@@ -47,15 +47,33 @@ var _removeFade = function(self, INSTANT){
 };
 
 // Make Label
-var _makeLabel = function(wordID, x, y, width, height){
+var _makeLabel = function(wordID, config){
+	
 	var dom = document.createElement("div");
 	dom.className = "label";
-	if(x!==undefined) dom.style.left = x+"px";
-	if(y!==undefined) dom.style.top = y+"px";
-	if(width!==undefined) dom.style.width = width+"px";
-	if(height!==undefined) dom.style.height = height+"px";
+
 	dom.innerHTML = Words.get(wordID);
+	config = config || {};
+	
+	if(config.x!==undefined) dom.style.left = config.x+"px";
+	if(config.y!==undefined) dom.style.top = config.y+"px";
+	if(config.w!==undefined) dom.style.width = config.w+"px";
+	if(config.h!==undefined) dom.style.height = config.h+"px";
+
+	if(config.rotation!==undefined) dom.style.transform = "rotate("+config.rotation+"deg)";
+	if(config.align!==undefined) dom.style.textAlign = config.align;
+	if(config.color!==undefined) dom.style.color = config.color;
+
 	return dom;
+
+};
+
+// Tween
+var Tween_get = function(target){
+	return Tween.get(target, {useTicks:true});
+}
+var _s = function(seconds){
+	return Math.ceil(Ticker.framerate*seconds); // converts seconds to ticks
 };
 
 /*******
diff --git a/js/sims/PD.js b/js/sims/PD.js
index 4b1915e..e3e9932 100644
--- a/js/sims/PD.js
+++ b/js/sims/PD.js
@@ -9,7 +9,25 @@ PD.PAYOFFS_DEFAULT = {
 	T: 3 // temptation: you put no coin, got 3 coins anyway
 };
 
-PD.PAYOFFS = PD.PAYOFFS_DEFAULT;
+PD.PAYOFFS = JSON.parse(JSON.stringify(PD.PAYOFFS_DEFAULT));
+
+subscribe("pd/editPayoffs", function(payoffs){
+	PD.PAYOFFS = payoffs;
+});
+subscribe("pd/editPayoffs/P", function(value){ PD.PAYOFFS.P = value; });
+subscribe("pd/editPayoffs/S", function(value){ PD.PAYOFFS.S = value; });
+subscribe("pd/editPayoffs/R", function(value){ PD.PAYOFFS.R = value; });
+subscribe("pd/editPayoffs/T", function(value){ PD.PAYOFFS.T = value; });
+subscribe("pd/defaultPayoffs", function(){
+
+	PD.PAYOFFS = JSON.parse(JSON.stringify(PD.PAYOFFS_DEFAULT));
+
+	publish("pd/editPayoffs/P", [PD.PAYOFFS.P]);
+	publish("pd/editPayoffs/S", [PD.PAYOFFS.S]);
+	publish("pd/editPayoffs/R", [PD.PAYOFFS.R]);
+	publish("pd/editPayoffs/T", [PD.PAYOFFS.T]);
+
+});
 
 PD.NOISE = 0;
 
diff --git a/js/sims/SandboxUI.js b/js/sims/SandboxUI.js
index ccc6cee..9b79120 100644
--- a/js/sims/SandboxUI.js
+++ b/js/sims/SandboxUI.js
@@ -12,10 +12,29 @@ function SandboxUI(config){
 	// BUTTONS for playing //////////////////
 	/////////////////////////////////////////
 
-	var playButton = new Button({x:130, y:135, text_id:"label_play", message:"tournament/autoplay"});
+	var playButton = new Button({
+		x:130, y:135, text_id:"label_play",
+		onclick: function(){
+			if(slideshow.objects.tournament.isAutoPlaying){
+				publish("tournament/autoplay/stop");
+			}else{
+				publish("tournament/autoplay/start");
+			}
+		}
+	});
+	subscribe("tournament/autoplay/stop",function(){
+		playButton.setText("label_play");
+	});
+	subscribe("tournament/autoplay/start",function(){
+		playButton.setText("label_stop");
+	});
 	dom.appendChild(playButton.dom);
-	var stepButton = new Button({x:130, y:135+70, text_id:"label_step", message:"tournament/step"});
+
+	var stepButton = new Button({
+		x:130, y:135+70, text_id:"label_step", message:"tournament/step"
+	});
 	dom.appendChild(stepButton.dom);
+	
 	var resetButton = new Button({x:130, y:135+70*2, text_id:"label_reset", message:"tournament/reset"});
 	dom.appendChild(resetButton.dom);
 
@@ -84,13 +103,62 @@ function SandboxUI(config){
 
 	var page = pages[1];
 
-	var label = _makeLabel("sandbox_payoffs", 0, 0, 433);
-	page.appendChild(label);
+	// Labels
+	page.appendChild(_makeLabel("sandbox_payoffs", {x:0, y:0, w:433}));
+	page.appendChild(_makeLabel("label_cooperate", {x:212, y:64, rotation:45, align:"center", color:"#cccccc"}));
+	page.appendChild(_makeLabel("label_cooperate", {x:116, y:64, rotation:-45, align:"center", color:"#cccccc"}));
+	page.appendChild(_makeLabel("label_cheat", {x:309, y:137, rotation:45, align:"center", color:"#cccccc"}));
+	page.appendChild(_makeLabel("label_cheat", {x:70, y:137, rotation:-45, align:"center", color:"#cccccc"}));
+
+	// Inc(rement) De(crement) Numbers
+	// which are symmetrical, and update each other!
+	var numbers = [];
+	var _makeIncDec = function(letter,x,y){
+		(function(letter,x,y){
+
+			var number = new IncDecNumber({
+				x:x, y:y, max:5, min:-5,
+				value: PD.PAYOFFS_DEFAULT[letter],
+				onchange: function(value){
+					publish("pd/editPayoffs/"+letter,[value]);
+				}
+			});
+			subscribe("pd/editPayoffs/"+letter,function(value){
+				number.setValue(value);
+			});
+			page.appendChild(number.dom);
+			numbers.push(number);
+
+		})(letter,x,y);
+	};
+
+	_makeIncDec("R", 191, 127);
+	_makeIncDec("R", 233, 127);
+
+	_makeIncDec("T", 121, 197);
+	_makeIncDec("S", 161, 197);
+
+	_makeIncDec("S", 263, 197);
+	_makeIncDec("T", 306, 197);
+
+	_makeIncDec("P", 192, 268);
+	_makeIncDec("P", 232, 268);
+
+	// Reset
+	var resetPayoffs = new Button({x:240, y:300, text_id:"sandbox_reset_payoffs", message:"pd/defaultPayoffs"});
+	page.appendChild(resetPayoffs.dom);
 
 	/////////////////////////////////////////
 	// PAGE 2: RULES ////////////////////////
 	/////////////////////////////////////////
 
+	var page = pages[2];
+
+	// Labels
+	page.appendChild(_makeLabel("sandbox_rules_1", {x:0, y:0, w:433}));
+	page.appendChild(_makeLabel("sandbox_rules_2", {x:0, y:100, w:433}));
+	page.appendChild(_makeLabel("sandbox_rules_3", {x:0, y:225, w:433}));
+
 	/////////////////////////////////////////
 	// Add & Remove Object //////////////////
 	/////////////////////////////////////////
diff --git a/js/sims/Tournament.js b/js/sims/Tournament.js
index a150b5d..92e8e66 100644
--- a/js/sims/Tournament.js
+++ b/js/sims/Tournament.js
@@ -82,7 +82,7 @@ function Tournament(config){
 	self.populateAgents = function(){
 
 		// Clear EVERYTHING
-		self.agentsContainer.removeChildren();
+		while(self.agents.length>0) self.agents[0].kill();
 		
 		// Convert to an array
 		self.agents = _convertCountToArray(AGENTS);
@@ -117,11 +117,7 @@ function Tournament(config){
 	self.createNetwork = function(){
 
 		// Clear EVERYTHING
-		self.connections = [];
-		self.networkContainer.removeChildren();
-		for(var i=0; i<self.agents.length; i++){
-			self.agents[i].clearConnections();
-		}
+		while(self.connections.length>0) self.connections[0].kill();
 		
 		// Connect all of 'em
 		for(var i=0; i<self.agents.length; i++){
@@ -129,8 +125,9 @@ function Tournament(config){
 			for(var j=i+1; j<self.agents.length; j++){
 				var playerB = self.agents[j];
 				var connection = new TournamentConnection({
-					from:playerA,
-					to:playerB
+					tournament: self,
+					from: playerA,
+					to: playerB
 				});
 				self.networkContainer.addChild(connection.graphics);
 				self.connections.push(connection);
@@ -138,6 +135,10 @@ function Tournament(config){
 		}
 
 	};
+	self.actuallyRemoveConnection = function(connection){
+		var index = self.connections.indexOf(connection);
+		self.connections.splice(index,1);
+	};
 
 
 	///////////////////////
@@ -146,10 +147,21 @@ function Tournament(config){
 
 	var AGENTS;
 	self.reset = function(){
+
+		// Agents & Network...
 		AGENTS = JSON.parse(JSON.stringify(Tournament.INITIAL_AGENTS));
 		self.populateAgents();
 		self.createNetwork();
-		self.isAutoPlaying = false;
+
+		// Animation...
+		self.STAGE = STAGE_REST;
+		_playIndex = 0;
+		_tweenTimer = 0;
+
+		// Stop autoplay!
+		publish("tournament/autoplay/stop");
+		_step = 0;
+
 	};
 
 	subscribe("tournament/reset", self.reset);
@@ -184,7 +196,7 @@ function Tournament(config){
 				return config.strategy==badAgent.strategyName;
 			});
 			config.count--; // remove one
-			badAgent.kill(); // KILL
+			badAgent.eliminate(); // ELIMINATE
 		}
 
 	};
@@ -249,6 +261,7 @@ function Tournament(config){
 	self.isAutoPlaying = false;
 	var _step = 0;
 	var _nextStep = function(){
+		if(self.STAGE!=STAGE_REST) return;
 		if(_step==0) publish("tournament/play");
 		if(_step==1) publish("tournament/eliminate");
 		if(_step==2) publish("tournament/reproduce");
@@ -261,9 +274,13 @@ function Tournament(config){
 			if(self.isAutoPlaying) _startAutoPlay();
 		},500);
 	};
-	subscribe("tournament/autoplay", _startAutoPlay);
-	subscribe("tournament/step", function(){
+	var _stopAutoPlay = function(){
 		self.isAutoPlaying = false;
+	};
+	subscribe("tournament/autoplay/start", _startAutoPlay);
+	subscribe("tournament/autoplay/stop", _stopAutoPlay);
+	subscribe("tournament/step", function(){
+		publish("tournament/autoplay/stop");
 		_nextStep();
 	});
 
@@ -272,6 +289,9 @@ function Tournament(config){
 	var _tweenTimer = 0;
 	app.ticker.add(function(delta) {
 
+		// Tick
+		Tween.tick();
+
 		// PLAY!
 		if(self.STAGE == STAGE_PLAY){
 			if(_playIndex>0) self.agents[_playIndex-1].dehighlightConnections();
@@ -281,6 +301,7 @@ function Tournament(config){
 			}else{
 				self.playOneTournament(); // FOR REAL, NOW.
 				_playIndex = 0;
+				_tweenTimer = 0;
 				self.STAGE = STAGE_REST;
 				// slideshow.objects._b2.activate(); // activate NEXT button!
 			}
@@ -289,7 +310,11 @@ function Tournament(config){
 		// ELIMINATE!
 		if(self.STAGE == STAGE_ELIMINATE){
 			self.eliminateBottom(Tournament.SELECTION);
-			self.STAGE = STAGE_REST;
+			_tweenTimer++;
+			if(_tweenTimer==_s(0.3)){
+				_tweenTimer = 0;
+				self.STAGE = STAGE_REST;
+			}
 			// slideshow.objects._b3.activate(); // activate NEXT button!
 		}
 
@@ -366,6 +391,8 @@ function Tournament(config){
 function TournamentConnection(config){
 
 	var self = this;
+	self.config = config;
+	self.tournament = config.tournament;
 
 	// Connect from & to
 	self.from = config.from;
@@ -419,7 +446,8 @@ function TournamentConnection(config){
 	self.kill = function(){
 		if(self.IS_DEAD) return;
 		self.IS_DEAD = true;
-		if(self.graphics.parent) self.graphics.parent.removeChild(self.graphics); // remove self's graphics
+		self.graphics.parent.removeChild(self.graphics); // remove self's graphics
+		self.tournament.actuallyRemoveConnection(self);
 	};
 
 };
@@ -445,6 +473,9 @@ function TournamentAgent(config){
 		for(var i=0;i<self.connections.length;i++) self.connections[i].dehighlight();
 	};
 	self.clearConnections = function(){
+		for(var i=0;i<self.connections.length;i++){
+			self.connections[i].kill();
+		}
 		self.connections = [];
 	};
 
@@ -521,30 +552,34 @@ function TournamentAgent(config){
 	};
 	self.updatePosition();
 
-	// KILL
-	self.kill = function(){
-		
-		// KILL ALL CONNECTIONS
-		for(var i=0;i<self.connections.length;i++){
-			self.connections[i].kill();
-		}
+	// ELIMINATE
+	self.eliminate = function(){
+
+		// INSTA-KILL ALL CONNECTIONS
+		self.clearConnections();
 
 		// Tween -- DIE!
 		scoreText.visible = false;
-		Tween.get(g).to({
+		Tween_get(g).to({
 			alpha: 0,
 			x: g.x+Math.random()*20-10,
 			y: g.y+Math.random()*20-10,
 			rotation: Math.random()*0.5-0.25
-		}, 300, Ease.circOut).call(function(){
-			
-			// NOW remove graphics.
-			if(self.graphics.parent) self.graphics.parent.removeChild(self.graphics);
+		}, _s(0.3), Ease.circOut).call(self.kill);
 
-			// AND remove self from tournament
-			self.tournament.actuallyRemoveAgent(self);
+	};
 
-		});
+	// KILL (actually insta-remove)
+	self.kill = function(){
+
+		// Remove ANY tweens
+		Tween.removeTweens(g);
+		
+		// NOW remove graphics.
+		g.parent.removeChild(g);
+
+		// AND remove self from tournament
+		self.tournament.actuallyRemoveAgent(self);
 
 	};
 
diff --git a/lang/en.html b/lang/en.html
index 214e9bc..4866bad 100644
--- a/lang/en.html
+++ b/lang/en.html
@@ -9,6 +9,9 @@ Start the simulation with this distribution of players:
 <p id="sandbox_payoffs">
 The payoffs in a one-on-one game are:
 </p>
+<p id="sandbox_reset_payoffs">
+reset payoffs
+</p>
 
 <!--
 When translating the following, keep the "[N]", with square brackets,
@@ -31,7 +34,7 @@ After each tournament, eliminate the bottom [N] player &amp; reproduce the top [
 </p>
 
 <p id="sandbox_rules_3">
-In a one-on-one game, there's a [N]% chance in each round that a player will make a mistake
+In each round of a one-on-one game, there's a [N]% chance a player makes a mistake
 </p>
 
 
@@ -128,6 +131,10 @@ cheat
 play
 </p>
 
+<p id="label_stop">
+stop
+</p>
+
 <p id="label_step">
 step
 </p>