The gameplay revolves around pachinko, a popular Japanese form of entertainment that combines elements of pinball and slot machines. Players control the Evangelion units (01, 02, and 00) as they navigate through various stages, collecting items and defeating enemies to progress.
The original game has a deep skill and weapon system where players buy upgrades from Ritsuko and "pills" (consumables) from Misato. A "patch-exclusive" quality-of-life feature would be a translated live-preview of what each skill (e.g., Hayflick for HP regen, or synchronization level boosters) actually does before you commit your currency.