Merry Catamitesmas, by Rylie James Thomas / Blueberry Soft.
Made for the thecatamites, via the Glorious Trainwrecks event Klik & Klaus: Sekret Santa Klub 2013

'W''A''S''D' + mouse to move, 'Space bar' jumps, 'Esc' resets, 'Delete' quits.

Can you discover all four zones?