I've been playing around these days with "Big Brain Academy", a game on a Nintendo DS I found in the park (that's another story ) - and it really is fun

I've been thinking that these sort of games are perfect for the N7** & N8** systems - so I have a few questions:
- are there any similar linux games ?
- is there anyone interested in such a game ?
- (personal question) how much would anyone pay for such a game ? I'm not asking for money - I'm already pretty well payed and I'd rather do it for the fun - but I always wondered if it would be worth it to do small devs instead of corporate programming

Thanks and regards

EDIT damn grammar