diff --git a/README.md b/README.md
index 45ebab9..1f1f1e2 100644
--- a/README.md
+++ b/README.md
@@ -5,5 +5,6 @@
 ![kiki](img/shot08.png)
 ![kiki](img/shot06.png)
 ![kiki](img/shot11.png)
+![kiki](img/shot12.png)
 ![kiki](img/shot09.png)
 ![kiki](img/shot10.png)
diff --git a/coffee/actor.coffee b/coffee/actor.coffee
index 3bcb668..77da7d3 100644
--- a/coffee/actor.coffee
+++ b/coffee/actor.coffee
@@ -7,7 +7,6 @@
 {
 last
 }       = require '/Users/kodi/s/ko/js/tools/tools'
-log     = require '/Users/kodi/s/ko/js/tools/log'
 Action  = require './action'
 Timer   = require './timer'
 Event   = require './event'
diff --git a/coffee/bot.coffee b/coffee/bot.coffee
index db1eb5e..fc4a005 100644
--- a/coffee/bot.coffee
+++ b/coffee/bot.coffee
@@ -419,10 +419,10 @@ class Bot extends Pushable
         else
             @dir_sgn = 1
             @jump_once = false if action.id != Action.NOOP
-            # log "bot.actionFinished '#{action.name}' position:", @position if action.id in [Action.FORWARD, Action.JUMP_FORWARD, Action.CLIMB_DOWN]
-            # log "bot.actionFinished '#{action.name}' orientation:", @orientation.rounded().name if action.id in [Action.TURN_LEFT, Action.TURN_RIGHT, Action.CLIMB_UP]
+            log "bot.actionFinished '#{action.name}' position:", @position if action.id in [Action.FORWARD, Action.JUMP_FORWARD, Action.CLIMB_DOWN]
+            log "bot.actionFinished '#{action.name}' orientation:", @orientation.rounded().name if action.id in [Action.TURN_LEFT, Action.TURN_RIGHT, Action.CLIMB_UP]
             
-            if world.getRealOccupantAtPos(@position.plus @getDown()).isMutant?()
+            if world.getRealOccupantAtPos(@position.plus @getDown())?.isMutant?()
                 # keep action chain flowinwg in order to detect environment changes
                 log 'bot.actionFinished mutant below: startTimedAction NOOP'
                 @startTimedAction @getActionWithId(Action.NOOP), 0
diff --git a/coffee/cage.coffee b/coffee/cage.coffee
index 02f1344..41cf9d3 100644
--- a/coffee/cage.coffee
+++ b/coffee/cage.coffee
@@ -4,7 +4,6 @@
 # 000       000   000  000   000  000     
 #  0000000  000   000   0000000   00000000
 
-log      = require '/Users/kodi/s/ko/js/tools/log'
 Material = require './material'
 
 class Cage
diff --git a/coffee/gate.coffee b/coffee/gate.coffee
index 592a917..cfed7b4 100644
--- a/coffee/gate.coffee
+++ b/coffee/gate.coffee
@@ -54,7 +54,7 @@ class Gate extends Switch
     newCellMate: (object) ->
         if object.name == 'player' and @active
             world.playSound 'GATE_WARP'
-            log 'gate trigger enter event', @events[@ENTER_EVENT].actions.length
+            # log 'gate trigger enter event', @events[@ENTER_EVENT].actions.length
             @events[@ENTER_EVENT].triggerActions() 
             @active = false
                 
diff --git a/coffee/gear.coffee b/coffee/gear.coffee
index 8f7687e..0c75cb6 100644
--- a/coffee/gear.coffee
+++ b/coffee/gear.coffee
@@ -4,7 +4,6 @@
 # 000   000  000       000   000  000   000
 #  0000000   00000000  000   000  000   000
 
-log      = require '/Users/kodi/s/ko/js/tools/log'
 Valve    = require './valve'
 Action   = require './action'
 Pos      = require './lib/pos'
diff --git a/coffee/geom.coffee b/coffee/geom.coffee
index 934749f..e90cb34 100644
--- a/coffee/geom.coffee
+++ b/coffee/geom.coffee
@@ -5,7 +5,6 @@
 #   000   000  000       000   000  000 0 000
 #    0000000   00000000   0000000   000   000
 
-log    = require '/Users/kodi/s/ko/js/tools/log'
 Vector = require './lib/vector'
 
 class Geom
diff --git a/coffee/item.coffee b/coffee/item.coffee
index 4d13be5..d56b922 100644
--- a/coffee/item.coffee
+++ b/coffee/item.coffee
@@ -5,7 +5,6 @@
 #   000     000     000       000 0 000
 #   000     000     00000000  000   000
 
-log        = require '/Users/kodi/s/ko/js/tools/log'
 Actor      = require './actor'
 Pos        = require './lib/pos'
 Vector     = require './lib/vector'
diff --git a/coffee/levels.coffee b/coffee/levels.coffee
index 2c890bb..f17ccb3 100644
--- a/coffee/levels.coffee
+++ b/coffee/levels.coffee
@@ -10,6 +10,7 @@ class Levels
         @dict = {}
         @list = [
             # "test",
+            "grid",
             # --- introduction
             "steps",   # ok
             "start",   # ok
@@ -23,7 +24,7 @@ class Levels
             "gold", 
             "escape", 
             "gears", 
-            "gamma", 
+            "gamma",  # scheme change doesn't work
             "cube", 
             "switch", # exit doesnt open, other scheme
             # # "borg", 
@@ -33,11 +34,12 @@ class Levels
             "energy", 
             "maze", 
             "love", 
-            "chain",
             # --- medium
             "towers", 
             "edge", 
             "random", 
+            "slick", 
+            "bridge", 
             "plate", 
             "nice", 
             "entropy", 
@@ -45,8 +47,6 @@ class Levels
             "strange",
             "core",
             # --- difficult
-            "slick", 
-            "bridge", 
             "flower", 
             "stones", 
             "walls", 
diff --git a/coffee/levels/chain.coffee b/coffee/levels/chain.coffee
deleted file mode 100644
index 8a04dcb..0000000
--- a/coffee/levels/chain.coffee
+++ /dev/null
@@ -1,46 +0,0 @@
-
-#    0000000  000   000   0000000   000  000   000
-#   000       000   000  000   000  000  0000  000
-#   000       000000000  000000000  000  000 0 000
-#   000       000   000  000   000  000  000  0000
-#    0000000  000   000  000   000  000  000   000
-
-module.exports =
-    name:       "chain"
-    scheme:     "candy"
-    size:       [9,9,5]
-    help:       """
-                $scale(1.5)mission:
-                activate the exit!
-                
-                to activate the exit,
-                feed it with electricity:
-                    
-                connect the generator
-                with the motor
-                
-                place a wire stone
-                next to the exit
-                """
-    player:     
-        coordinates:    [0,4,3]
-        orientation:    ZupX
-                
-    exits:      [
-        name:       "exit"
-        active:     0
-        position:   [0,-1,0]
-    ],
-    create: ->
-        s = world.size
-        d = s.z/2
-        
-        world.addObjectAtPos 'Wall', 0, 0, d
-        world.addObjectAtPos 'Bomb', 0, 1, d
-        world.addObjectAtPos 'Bomb', 1, 0, d
-        world.addObjectAtPos 'Bomb', 0, 7, d
-        world.addObjectAtPos 'Bomb', 5, 7, d
-        world.addObjectAtPos 'Bomb', 1, 3, d
-        world.addObjectAtPos 'Bomb', 5, 3, d
-        world.addObjectAtPos 'WireStone', 1, 5, d
-        
\ No newline at end of file
diff --git a/coffee/levels/grid.coffee b/coffee/levels/grid.coffee
index 28a7c12..07bf962 100644
--- a/coffee/levels/grid.coffee
+++ b/coffee/levels/grid.coffee
@@ -1,6 +1,6 @@
 module.exports =
     name:       "grid"
-    scheme:     "candy"
+    scheme:     "crazy"
     size:       [9,9,9]
     help:       """
                 $scale(1.5)mission:
diff --git a/coffee/levels/maze.coffee b/coffee/levels/maze.coffee
index 84c5a65..5529607 100644
--- a/coffee/levels/maze.coffee
+++ b/coffee/levels/maze.coffee
@@ -11,6 +11,7 @@ module.exports =
     deisgn:     'Michael Abel'
     scheme:     "default"
     size:       [4,4,4]
+    camera:     'inside'
     help:       """
                 $scale(1.5)mission:
                 get to the exit!
@@ -77,5 +78,4 @@ module.exports =
            
         world.addObjectAtPos('Light', 3,0,0)
             
-        world.setCameraMode(world.CAMERA_INSIDE)
         
\ No newline at end of file
diff --git a/coffee/levels/neutron.coffee b/coffee/levels/neutron.coffee
index 5e7bc37..092d1e0 100644
--- a/coffee/levels/neutron.coffee
+++ b/coffee/levels/neutron.coffee
@@ -8,7 +8,7 @@
 module.exports = 
     name:       "neutron"
     design:     'Michael Abel'
-    scheme:     "neutron"
+    scheme:     "tron"
     size:       [11,11,11]
     help:       """ 
                 $scale(1.5)mission:
diff --git a/coffee/levels/slick.coffee b/coffee/levels/slick.coffee
index 847f42e..cc2e051 100644
--- a/coffee/levels/slick.coffee
+++ b/coffee/levels/slick.coffee
@@ -18,8 +18,8 @@ module.exports =
                 you can't grab it while falling
                 """
     player:   
-        coordinates:    [4,10,0]
-        orientation:    rotx90
+        coordinates:    [0,10,13]
+        orientation:    ZdownY
     exits:    [
         name:         "exit"
         active:       1
diff --git a/coffee/levels/walls.coffee b/coffee/levels/walls.coffee
index 529adf0..3cc42a0 100644
--- a/coffee/levels/walls.coffee
+++ b/coffee/levels/walls.coffee
@@ -8,7 +8,7 @@
 module.exports =
     name:       "walls"
     design:     'Michael Abel'
-    scheme:     "default"
+    scheme:     "red"
     size:       [7,5,5]
     help:       """
                 $scale(1.5)mission:
@@ -31,20 +31,16 @@ module.exports =
         s=world.size
         {Stone} = require '../items'
         middlemax = (u,v,w) ->
-            # s=world.size
             d= 3.0/( (u-s.x/2.0)**2+ (v-s.y/2.0)**2 + (w-s.z/2.0)**2 + 1 )
             Math.min 1.0 ,Math.max 0.2, d  
             
         middlemin = (u,v,w) ->
-            # s=world.size
             d= 2* ( (u-s.x/2.0)**2+ (v-s.y/2.0)**2 + (w-s.z/2.0)**2  )/25
             Math.min 1.0, Math.max 0.4,d 
             
-        # for (i,j,l) in [ (m,n,o) for m in range(s.x) for n in range(s.y) for o in range(s.z)]
         for i in [0...s.x]
             for j in [0...s.y]
                 for l in [0...s.z]
                     if i==Math.floor(s.x/2) or i==Math.floor(s.x/2-2) or i==Math.floor(s.x/2+2)
-                        log "#{i} #{j} #{l}"
                         world.addObjectAtPos new Stone(color:[0.5*i,0.5*j,0.5*l], opacity:0.6), i,j,l
     
\ No newline at end of file
diff --git a/coffee/motorgear.coffee b/coffee/motorgear.coffee
index e6b590d..e6fce54 100644
--- a/coffee/motorgear.coffee
+++ b/coffee/motorgear.coffee
@@ -4,7 +4,6 @@
 # 000 0 000  000   000     000     000   000  000   000  000   000  000       000   000  000   000
 # 000   000   0000000      000      0000000   000   000   0000000   00000000  000   000  000   000
 
-log           = require '/Users/kodi/s/ko/js/tools/log'
 Gear          = require './gear'
 Geom          = require './geom'
 Face          = require './face'
diff --git a/coffee/player.coffee b/coffee/player.coffee
index 3e11b6a..58e88de 100644
--- a/coffee/player.coffee
+++ b/coffee/player.coffee
@@ -118,10 +118,6 @@ class Player extends Bot
                     Timer.addAction @rotate_action
     
     die: () ->
-        super
-        # Controller.displayText "game over" 
-        world.playSound 'BOT_DEATH'
-        world.setCameraMode world.CAMERA_FOLLOW
                 
     #   000   000  00000000  000   000
     #   000  000   000        000 000 
diff --git a/coffee/scheme.coffee b/coffee/scheme.coffee
index 29e0773..5ccf9fc 100644
--- a/coffee/scheme.coffee
+++ b/coffee/scheme.coffee
@@ -88,45 +88,6 @@ module.exports =
         glow:
             color:  rgb 1, 1, 0
     
-    # 000   000  00000000  000   000  000000000  00000000    0000000   000   000
-    # 0000  000  000       000   000     000     000   000  000   000  0000  000
-    # 000 0 000  0000000   000   000     000     0000000    000   000  000 0 000
-    # 000  0000  000       000   000     000     000   000  000   000  000  0000
-    # 000   000  00000000   0000000      000     000   000   0000000   000   000
-    
-    neutron:          
-        plate:
-            color:  rgb 0.5, 0.5, 0.5
-        bulb:            
-            color:  rgb 0, 0, 0
-        bomb:             
-            color:  rgb 0.5, 0, 0
-        stone:            
-            color:  rgb 0.5, 0.5, 0.5
-            opacity:      0.5
-        switch:           
-            color:  rgb 0, 0, 0.5
-        gate:             
-            color:  rgb 1, 1, 0
-        player:           
-            color:  rgb 1, 0.5, 0
-        tire:         
-            color:  rgb 0.5, 0, 0
-        mutant:           
-            color:  rgb 0.5, 0, 0
-        mutantTire:
-            color:  rgb 0, 0, 0.2
-        text:             
-            color:  rgb 0.8, 0.8, 0
-            bright: rgb 1, 1, 0
-            dark:   rgb 0.6, 0.4, 0
-        gear:             
-            color:  rgb 1, 0, 0
-        wire:             
-            color:  rgb 0.1, 0.1, 0.9
-        glow:
-            color:  rgb 1, 1, 0
-    
     # 000000000  00000000   0000000  000000000
     #    000     000       000          000   
     #    000     0000000   0000000      000   
@@ -175,6 +136,8 @@ module.exports =
     candy:            
         plate:
             color:  rgb 0.8, 0, 0.9
+        wall:
+            color:  rgb 0.5, 0.5, 1
         bulb:
             color:  rgb 1, 1, 1
         text:             
@@ -182,10 +145,10 @@ module.exports =
             bright: rgb 1, 0, 1
             dark:   rgb 0.4, 0, 0.4
         bomb:             
-            color:  rgb 0.73, 0, 0.75
+            color:  rgb 1, 0.8, 0
         stone:            
-            color:  rgb 0.85, 0, 0.95
-            opacity:      0.6
+            color:    rgb 0.85, 0, 0.5
+            opacity:  0.4
         switch:           
             color:  rgb 0.3, 0, 0.3
         gate:             
@@ -201,7 +164,9 @@ module.exports =
         gear:             
             color:  rgb 0.7, 0, 0.7
         wire:             
-            color:  rgb 1, 0, 1
+            color:  rgb 0.5, 0.5, 1
+        wirePlate:             
+            color:  rgb 0, 0, 1
         glow:
             color:  rgb 1, 1, 0
         
@@ -460,18 +425,23 @@ module.exports =
     # 000       000   000  000   000   000        000   
     #  0000000  000   000  000   000  0000000     000   
     
-    crazy:            
+    crazy: 
+        plate:      
+            color:  rgb 0,0,0
         raster:            
-            color:  rgb 0.84, 0.22, 0.20
+            color:  rgb 1,1,1
+        stone:
+            color:  rgb 1,0,0
+            specular: rgb 1,1,1
+            shininess: 1000
+        wall:
+            color: rgb 1,0,0
         bulb:            
-            color:  rgb 0, 0, 0
-        stone:            
-            color:  rgb 1, 1, 1
-            stone:  0.2
+            color:  rgb 1, 0, 0
         switch:           
             color:  rgb 0.9, 1, 0.9
         gate:             
-            color:  rgb 1, 1, 1, 0.8
+            color:  rgb 1, 0, 0
         player:           
             color:  rgb 0.6, 0.6, 0.6
         tire:
diff --git a/coffee/world.coffee b/coffee/world.coffee
index 1d0a638..dc8a904 100644
--- a/coffee/world.coffee
+++ b/coffee/world.coffee
@@ -251,8 +251,10 @@ class World extends Actor
         else if @dict.player.coordinates?
             @addObjectAtPos @player, new Pos @dict.player.coordinates
 
-        # @player.camera.setPosition new Vector 0,0,0
         @player.camera.setPosition @player.currentPos()
+        
+        @setCameraMode Camera.INSIDE if @dict.camera == 'inside'
+        
         @creating = false
     
     restart: () -> @create @dict
@@ -331,7 +333,8 @@ class World extends Actor
     exitLevel: (action) =>
         @finish()
         # log "world.level_index #{world.level_index} nextLevel #{World.levels.list[world.level_index+1]}"
-        world.create World.levels.list[world.level_index+(_.isNumber(action) and action or 1)]
+        nextLevel = (world.level_index+(_.isNumber(action) and action or 1)) % World.levels.list.length
+        world.create World.levels.list[nextLevel]
 
     activate: (objectName) -> @getObjectWithName(objectName)?.setActive? true
     
diff --git a/img/shot12.png b/img/shot12.png
new file mode 100644
index 0000000..10322fd
Binary files /dev/null and b/img/shot12.png differ
diff --git a/levels.txt b/levels.txt
index b9270c6..3c829b9 100644
--- a/levels.txt
+++ b/levels.txt
@@ -17,47 +17,14 @@
 16 size: 9 9 6    'sandbox'    scheme: 'bronze'
 17 size: 9 17 9   'energy'     scheme: 'default'
 18 size: 4 4 4    'maze'       scheme: 'default'
-world.unsetObject [WARNING] no cell at pos: 
-x   3
-y   3
-z   4
-world.unsetObject [WARNING] no cell at pos: 
-x   5
-y   1
-z   3
-world.unsetObject [WARNING] no cell at pos: 
-x   2
-y   1
-z   6
-world.unsetObject [WARNING] no cell at pos: 
-x   6
-y   1
-z   2
-world.unsetObject [WARNING] no cell at pos: 
-x   3
-y   1
-z   3
-world.unsetObject [WARNING] no cell at pos: 
-x   5
-y   1
-z   5
-world.unsetObject [WARNING] no cell at pos: 
-x   6
-y   1
-z   6
 19 size: 13 13 13 'love'       scheme: 'red'
-20 size: 9 9 5    'chain'      scheme: 'candy'
-world.unsetObject [WARNING] no cell at pos: 
-x   6
-y   0
-z   7
 21 size: 9 9 15   'towers'     scheme: 'metal'
 22 size: 7 7 7    'edge'       scheme: 'candy'
 23 size: 21 21 21 'random'     scheme: 'default'
 24 size: 7 7 9    'plate'      scheme: 'blue'
 25 size: 11 11 11 'nice'       scheme: 'tron'
 26 size: 9 9 9    'entropy'    scheme: 'green'
-27 size: 11 11 11 'neutron'    scheme: 'neutron'
+27 size: 11 11 11 'neutron'    scheme: 'tron'
 28 size: 9 9 9    'strange'    scheme: 'default'
 29 size: 9 9 9    'core'       scheme: 'green'
 30 size: 9 11 15  'slick'      scheme: 'tron'
@@ -65,9 +32,6 @@ z   7
 32 size: 7 7 11   'flower'     scheme: 'metal'
 33 size: 11 11 12 'stones'     scheme: 'blue'
 34 size: 7 5 5    'walls'      scheme: 'default'
-1 0 0
-1 0 1
-1 0 2
 35 size: 9 9 9    'grid'       scheme: 'candy'
 36 size: 9 7 9    'rings'      scheme: 'default'
 37 size: 9 6 9    'bronze'     scheme: 'bronze'
@@ -88,20 +52,3 @@ z   7
 52 size: 11 9 11  'conductor'  scheme: 'default'
 53 size: 13 5 13  'evil'       scheme: 'red'
 54 size: 9 9 9    'mutants'    scheme: 'blue'
--1 size: 0 0 0    'undefined'  scheme: 'default'
-world.unsetObject [WARNING] no cell at pos: 
-x   8
-y   0
-z   1
-world.unsetObject [WARNING] no cell at pos: 
-x   6
-y   4
-z   0
-world.unsetObject [WARNING] no cell at pos: 
-x   4
-y   3
-z   7
-world.unsetObject [WARNING] no cell at pos: 
-x   1
-y   3
-z   6