Treasure

Treasure Chests are tool items obtainable through the item drop system. They are modeled after what the chest contains; chests containing items for a specific hero will be styled after their respective heroes, while event crates will posses details related to the event. Treasure Chests can be opened with the use of a Treasure Key. Anything unboxed using an untradable key will become tradable on the date the key was supposed to become tradable.

When a chest is opened, a five second timer ticks down. Once opened to the tune of a cheering crowd, the player will receive one of a set of items which are listed in the cchest's description and are dependent on its series. The chest and key are removed from the player's inventory and replaced with the received item.

Active series
The following crates are currently available via the item drop system:

Series #12
Given out during the International 2012.

Series #13
Given out during the International 2012.

Series #10
Given to early buyers of The Defense 2 Pass

Series #9
Given out during the Steam Summer Sale 2012, available till July 31, 2012