Groupees has just released their latest bundle today the Capsule Computers Indie bundle where you can get two tiers of games for either $1 or $5.
In tier 1 you get Super Sanctum TD (Steam/PC), Cognition: Episode 1 (Desura, DRM Free, Mac), Three Dead Zed (PC, Mac, Linux) and Transcripted (PC, Mac, Steam) all for just $1.
In tier 2 you get all the games in tier 1 + SpaceChem (Steam, DRM Free, PC, Mac, Linux), Sword & Soldiers HD (Steam, PC, Mac), Lost Marbles (Desura, DRM Free, PC, Mac) and Pressure (Steam, PC) for $1.
All prices are in US dollars and exclude tax. 10% of your payment can be donated to charity by checking the box under payment options.