Based on Valve's Portal, Portal Flash brings it all up in 2d, including over 40 challenging puzzles
Throw a paper plane as far as you can. Collect points and upgrade your plane so you can throw it even further.
It's not impossible, but you might dig for your brains through your ear. Give it your best shot and try not to get shot.
The objective in Minesweeper is to find and mark all the mines hidden under the grey squares, in the shortest time possible.
The goal of Tetris is to score as many points as possible by clearing horizontal lines of Blocks.
Bullet Time is a reaction time tester. As the rounds progress you've got less time to react.