This is a super high-tech simulator for opening TF2's Mann Co. Supply Crates and Dota's Treasure Chests. Open virtual crates right here! See how expensive the unusual you get is! Just select a series and unlock some crates.
Results are estimated from available drop data collected from the over 20,000 crates opened but are not guaranteed to be 100% accurate to Valve's numbers. No crates were harmed in the making of this website.
Update: 3/10/13: Dota 2 1-12!