===================================================================
--- original.js
+++ change.js
@@ -228,9 +228,9 @@
 					rotation: -Math.PI * 0.25 + Math.random() * Math.PI * 0.5,
 					flying: 1,
 					levitOffset: 525
 				});
-			} else if (road && road.riverSegmentCount < ROAD_MAX_RIVER_SEGMENTS && !self.isRiver && !self.isWall && !self.previous.isWall && Math.random() < ROAD_GEN_FRAGILE_NATURE_CHANCE) {
+			} else if (road && road.riverSegmentCount < ROAD_MAX_RIVER_SEGMENTS && !self.isRiver && !self.isWall && !self.previous.isWall && (!self.previous.previous || !self.previous.previous.isWall) && (!self.previous.previous.previous || !self.previous.previous.previous.isWall) && Math.random() < ROAD_GEN_FRAGILE_NATURE_CHANCE) {
 				self.isRiver = true;
 				self.segmentRiver.visible = true;
 				road.riverSegmentCount++;
 				self.previous.isRiver = true;
@@ -241,9 +241,9 @@
 				});
 				attachObjectRadial(self.previous.background, new BoilingLava(), {
 					anchorR: 0.1 + 0.8 * Math.random()
 				});
-			} else if (road && road.wallSegmentCount < ROAD_MAX_WALL_SEGMENTS && !self.isWall && !self.isRiver && !self.previous.isRiver && Math.random() < ROAD_GEN_WALL_CHANCE) {
+			} else if (road && road.wallSegmentCount < ROAD_MAX_WALL_SEGMENTS && !self.isWall && !self.isRiver && !self.previous.isRiver && (!self.previous.previous || !self.previous.previous.isRiver) && (!self.previous.previous.previous || !self.previous.previous.previous.isRiver) && Math.random() < ROAD_GEN_WALL_CHANCE) {
 				self.isWall = true;
 				road.wallSegmentCount++;
 				var wallIndex = Math.floor(Math.random() * ROAD_GEN_WALL_ASSETS);
 				var scale = 1; //0.9 + 0.2 * Math.random();
@@ -1040,9 +1040,9 @@
 var ROAD_STEP_CHANCE_INCREMENT = 0; //0.05;
 var ROAD_GEN_PLANT_ASSETS = 3;
 var ROAD_GEN_PLANT_MAX = 3;
 var ROAD_GEN_TREE_ASSETS = 4;
-var ROAD_GEN_TREE_CHANCE = 0.1;
+var ROAD_GEN_TREE_CHANCE = 0; //0.1;
 var ROAD_GEN_CLOUD_ASSETS = 4;
 var ROAD_GEN_CLOUD_CHANCE = 0.2;
 var ROAD_GEN_DETRITUS_ASSETS = 2;
 var ROAD_GEN_DETRITUS_CHANCE = 0.05;
@@ -1063,10 +1063,10 @@
 var PLAYER_ANIMATION_SPEED_BASE = 0.02;
 var PLAYER_SCALE_BASE = 1; //0.5;
 var PLAYER_SPEED_BASE = MATH_2_PI / (GAME_TICKS * 10); // 10s to complete a revolution
 var PLAYER_SPEED_FACTOR_BASE = 1.0;
-var PLAYER_SPEED_FACTOR_MAX = 1.5;
-var PLAYER_SPEED_FACTOR_INCREMENT = 0.001;
+var PLAYER_SPEED_FACTOR_MAX = 3.0; //1.5;
+var PLAYER_SPEED_FACTOR_INCREMENT = 0.002; //0.001;
 var PLAYER_SPEED_DECREMENT = 0.01;
 ;
 // Scoring Constants
 var SCORE_TOTAL_DISTANCE = 500;