Just thought I'd mention that Qwak has one of those pay what you want sales going on.
http://www.qwak.co.uk/
You've probably not heard of this game, but it is an official PC-remake of a commercial Amiga game which got very good reviews back in the day. It's a cutesy platformer/action game that follows the general Bubble Bobble-style (where you clear a linear series of screens). Quite fun, and it looks and sounds nice as well.
Well worth having a look at, IMO, especially if you're an old Amiga fan.
Edit: Oh, and there's a Mac-version.

Shall have a go of the demo, it certainly has an amigaey look

Might as well try it.

If you buy, keep in mind you pay in GBP, not dollars. Just to avoid any unpleasant surprises. :-)

I decided to pick it up. Hook two controllers to your pc and old school multi player fun ensues. And the graphics are awesome :D MASSIVE FRUIT EVERYWHERE.

I think I vaguely remember the main character from back in the day... one of the RPS writers loved it: http://www.rockpapershotgun.com/2009/05/06/duck-super-qwak/

Thanks for the heads up. Grabbed both since it was so cheap, heh.

Don't forget http://www.gog.com/en/forum/general/gaming_deals_thread

Nice! Going to pay £2 for it - that's what I tend to pay for "pay what you want" games that I wouldn't have bought otherwise. The Youtube clip of the Amiga version is very nostalgic.