Resident Evil Revelations on Steam has tiered pre-purchase rewards, which offer items such as the survival horror game's soundtrack and artbook, a DLC Season Pass and a copy of Lost Planet: Extreme Conditions.

Higher tier rewards are unlocked as more people pre-purchase the $49.95 game on Steam.

The first reward tier includes a Resident Evil Art Book that features concepts, designs and artwork, and a 13-track Resident Evil Revelations soundtrack. The soundtrack and artbook will be delivered when the game is released.

The second reward pack includes the first tier and Lost Planet: Extreme Conditions. The game will be awarded to consumers as soon as the second tier is hit.

The last reward tier features the first two reward packs and a Resident Evil: Revelations Season Pass. The Season Pass includes four pieces of DLC which will be revealed after the game is released.

Resident Evil: Revelations will be released for PlayStation 3, Xbox 360 and Wii U on May 21 and the game will unlock on Steam on May 23. Capcom released system requirements for the game last week.