Undead Line, ridiculously hard top-down run and gun thing, but it's do-able once you realise how to use your shield...

Granada, another top-down shooter only this time you drive a tank. Some maze elements in this one as well.

Outlander, more or less "Mad Max: The Game". Drive around shooting folk from your car, then get out every so often and have a fight. Nice.

Sub-Terrania, fun puzzle/shooter thing, with some heavy gravity effects. The mirror puzzle's my favourite.
