Gravitron 2 is a retro arcade shooter with Thrust-like controls, where the objective is to destroy enemy reactors while saving as many scientists as you can before blasting off into space to complete a level. Keyboard, gamepad and mouse controls are all supported and can be reconfigured by accessing the options menu with the escape key while a game is in progress.
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I just discovered Gravitron 2 myself, and it plays like a dream! It doesn't have the pendulum gameplay of Thrust, but it has a heap of other features, beautiful graphics, 40 levels to play through, and is a mere $5 to buy. There's a demo, too.

Thrust was a great game it was rather simple in gameplay but it was so addictive!