OSTAA Gatekeeper CD Key Steam

The Heart of the Universe has been stolen by powerful forces. You must head to an unknown galaxy, find the heart and reclaim it. But your mission isn’t that simple: the Heart was hidden in a quantum cage, the keys to which are kept by the ancient giants, the Sirens. Experience the unexpected thrills of this action rogue-lite!

Choose your Hero

Several playable characters with unique abilities to suit your playstyle.

Limitless Skill Combinations

Gain experience to upgrade the characters’ skills, and utilize the abilities of found artifacts.

Team up with your friends

Invite your friends to take the role of a Universe defender and join you in this epic rogue-lite adventure!

Unique Totems system

Complete all the challenges to defend the Totems and open the path to new locations!

Find and Obtain 100+ Collectibles

There are over a hundred different items and each of those collectibles changes the gameplay and makes every run a unique adventure.

Dozen of unique Planets, enemies and Bosses

Otherworldly and breathtaking locations with various enemies and bosses for you to explore, shoot and fight!