In Tri, a game made within 48 hours for the Ludum Dare #20 Jam contest, you place force fields to get over obstacles and reflect dangerous lasers. It's a little bit like Portal, with environmental puzzles and ego perspective.
Use WASD or the arrows to move, the spacebar to jump, 1/2/3 to switch between generators, mouse left to place a generator, E to remove force field, mouse right to make a force field permanent.
Categories: Adventure / Escape
Screenshot(s):