吃鸡

From PUBG's English victory line 'Winner Winner Chicken Dinner', translated as 大吉大利，今晚吃鸡 ('great fortune, chicken for dinner'). 吃鸡 became shorthand for both the game itself and battle-royale games in general - including 和平精英 (the mainland-China version of PUBG Mobile).

Slang/casual; native to gamer chat. In a non-gaming context 吃鸡 still literally means 'eat chicken' - context disambiguates.