Mechanics of XCOM 2 11 game mechanics that XCOM 2 is known for — catalogued and cross-linked in the Game Mechanics Atlas. Base & Strategic LayerResearch/tech treesCombat & ActionCover system (half/full)Flanking bonusesLine of sightOverwatch/reaction fireTurn-based combatMeta & UI MechanicsIronman modeRandomness & ProbabilityHit chance percentagesSquad & Unit ManagementPanic/fear mechanicsPermadeathRecruitment/hiring