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I have both. Cro-mag's graphics are good, but frame rate is jerky, particularly with SFX and/or music on. Hard to get used to though.

Moto Racer is enjoyable - nice controls, just the right sensitivity, again a bit of slow-down, but generally good. Monotonous though, as you don't even race against people! You just ride around.

Both games don't allow you to race against other "humans", AFAIK.
 
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