Engines

"Engines" is a game in the Gravity Force-genre. Other games in that

genre is e.g. Turbo Rakketti, Gravity Force II, Roketz and Bratwürst.

You have a space-ship. Gravity pulls the ship downwards. By rotating

the ship and using the engine you can navigate through the 2-dimensional

landscape. Add cannons and another player, and presto, you've got a

shoot'em up-game.