The $10 tier provides you with your choice of PS4 or Steam on release.

$25 and up will provide you with your choice of PS4 or Steam on release, and a bonus Xbox One code on the house. That's 2 codes total.

The Battle Tested and Battle Hardened tiers will provide you with a Steam Code for beta testing that basically provides you with the final Steam release. Then you can choose between another Steam code or PS4 code, and a bonus Xbox One code. Total of 3. Why? Why not. You backed the game when I needed it most. You deserve it. <3