Thanks guys! :)
cesisco Will work on some more puzzly things, the colour coded button thing seems to work okay now, though the conveyors tend to be a little glitchy. Hopefully that'll be fixed soon - am trying to make it as robust as possible, so only the player can kill the characters, not a bug. :D
BTW - while it's still in dev, for those that didn't notice, there is mouse move - right click the blobs to move them around. Left click measures stuff. :D
For those that haven't tried yet - here are some shots of the most recent additions :
<img src="http://www.deviantart.com/download/324487281/wip_game_by_johnnysix-d5d6vzl.png" border="0" />