Wanna get about 300$ worth of games for just 30$ (90% off) and support charity at the same time?
This include Arma, Arma 2, Arma 3, DayZ and other games.
There are 4 tiers, the lowest will get you less games but will cost only 1$, the highest will get you all games of all tiers on this bundle and costs 30$ (for 300$ worth of games), then you can choose how much of your money go to this site, how much to game developers and how much to charity.
The bundles are made with a "pay what you want" mechanic and a choose where your money go option.
I bought from this site many times, I never had a problem.