Gameplay combines elements of FPS (First Person Shooters) and RPG (Role Playing Games). The combat gives a realistic feel with accurate bullet ballistics, weapons handling, and healing system. The world is free roam and a player can choose to explore it finding many secrets. This time AI will be more intelligent, using objects dynamically to take cover and now throwing grenades. Over the shoulder fire has been added. Anomalies will be more common and can now move. Artifacts can no longer be seen with the naked eye; the player will have to use a detector to see them.
Clear Sky will have a more elaborate A-life simulation, there will be much greater amount of "freedom". There will be a faction war in the Zone, a struggle for territory. The player will be able to choose a faction he likes best and lead it to victory, weakening the other factions in the process. The stronger your faction becomes, the better munitions the fighters will have. The war of factions will often change direction. Transition points and resources get captured, unexpected attacks are carried out. It all happens randomly, and your actions affect events in the Zone.
Note: It is not known if ALL factions can be joined (IE: You cannot join the Military, Bandits, Monolith, Mercenaries and Ecologists in the original where they would either immediately open fire on you or you simply can't join them (Ecologists)
The player will meet characters he knows from Shadow of Chernobyl.