MORAL: Play The Game
I recently played Ploverdrive by friends of the website, The Dark Forest, as well as soulware. It's a two-player, one keyboard setup. You play as a little plover trying to get back to her nest, or as the obstacles she encounters along the way, swapping whenever the plover hits an obstacle. The whole screen flips to signal that a swap is taking place. It's incedibly fun and rage-inducing. Bonus: The music is fantastic.
In fact, if you like the music I also encourage you to check out Draft and Graft by the same folks. The music for Draft and Graft is some of my favorite work from SplitSuns.