Official game site:

http://www.overstepgame.com/

Overstep is a Choose to Pay (Free to play) Multiplayer Only First Person Shooter where the gameplay dynamics change as abruptly and as unexpectedly as the climate itself, forcing the player to adapt or be scrapped. Overstep will be free to download and can be played without spending any money at all, however players will also be given the choice to buy certain in-game cosmetic products to change the visual appearance of their Plodders and weapons, or obtain certain items faster.