In XenoShyft: Onslaught, a strategic base defense deck-builder, players take on the role of the NorTec Military, charged with defending their base against the onslaught of the alien "Hive". XenoShyft: Onslaught combines classic deck-building and resource management with fast-paced combat and unique "base defense" elements. As the game progresses, each player builds up their deck of Troop, Equipment, and Item cards, which they will in turn use to defend the base against incoming enemies in deadly combat. It is up to the players to work together in order to outlast the horrors awaiting them by coordinating strategy, utilizing the strengths of their unique divisions (Med Bay, Weapons Research, Science Lab, and Armory), and organizing defense tactics to ensure no player is caught off-guard by surprise attacks. XenoShyft: Onslaught is a game of tactical decisions and survival horror — and survival is never guaranteed.