.ZS1 File Extension
File TypeZSNES Slot 1 Saved State File
What is a ZS1 file?
File saved by ZSNES, a computer-based SNES emulator; stores a saved game snapshot that can be loaded at another time; used to save and load game progress.
NOTE: ZSNES save states are different than in-game save states. ZSNES save states may be created at any point during gameplay whereas in-game save states typically are controlled by the progress within the game.