Wadjet Eye Games' Puzzle Bots is currently on sale for $5 (50% off the original price of $10), but this discount is only valid until the 6th of September 2010. To take advantage of the offer you need to enter the coupon code PUZZLEPAX at checkout.

Charlie's Games is running a Bank Holiday promotion on his site, where both Irukandji and Bullet Candy Perfect can be bought for a sum of $1 (or more, if you feel like donating). It doesn't matter which OS you're using, by purchasing both games you're entitled to download links for the Mac, Windows and Linux versions.

Direct2Drive and GamersGate are both running Penumbra sales to coincide with the release of Frictional Games' Amnesia: The Dark Descent next week. You can purchase the Penumbra Collection for only $6, which includes all three of the Penumbra games from the trilogy (Penumbra: Overture, Penumbra: Black Plague and Penumbra Requiem).

This last deal is for Xbox360 console owners only. Zeno Clash: Ultimate Edition is on sale for only 800 MSP (33% discount off the original price of 1200 MSP), and the promotion expires on the 6th of September as well.