Shin Megami Tensei IV: Apocalypse Undub retains the core elements that define the SMT series. The game is renowned for its deep combat system, which revolves around negotiating with and battling demons. Players can collect, summon, and customize a vast array of demons, each with its unique abilities and strengths. The combat is turn-based, requiring strategy and a good understanding of the elemental weaknesses and resistances of both your party and the enemies.