Hey, just wanted to show a game I've been working on over the past few weeks. It's kind of BattleBlock Theater art-styled and it's based around subways. Uses Slick2D by Kevin Glass, and the wonderful music of Kevin MacLeod! (thanks to both Kevins!)
Download is here: http://dl.dropboxusercontent.com/u/32129384/MTG/MTG-pre-alpha-0.18.zip
WARNING: There are no levels past 1-1. Attempting to access an invalid level may crash the game! I've been more concerned about actual technical details of the game at the moment rather than level design. Try out the level editor! Framerate is locked at 125 if you're wondering.
Level 1-1 (subject to change)
Controls: arrow keys, space to jump
Level editor: lclick to place, rclick to remove, middleclick to copy, lctrl for menu, hold tab for colours
The levels are block ids (not the greatest) stored with 3 more bytes of colour data. Potentially you could modify the level files to contain custom colours (RGB)