Second Extinction is an action-packed co-op shooter game that takes place in a world where mutated dinosaurs have taken over. The game allows up to three players to team up and take on the role of survivors, who must use their skills, abilities, and weapons to defeat the hordes of dino mutants.

The game is set in a vast open world, where players can explore and complete various missions. The missions vary from rescuing hostages to destroying enemy bases, and each mission has its own unique set of challenges and rewards. The game also features a leveling system, where players can upgrade their characters' skills and abilities, making them more powerful and effective in combat.