In Trid you'll be recreating patterns as fast as you can. For every pattern you get a tiny bit of extra time in order to finish the next one, don't assume this is easy though, Trid has a trick up his sleeve that will drive you nuts!
Right-click game to play full-screen (if available)
Click the tiles to place or remove tiles, recreate the pattern in the corner as fast as you can. For every completed pattern you get a few extra seconds on the clock.