Modes, editions & rewards
Can you play Phantom Blade Zero in co-op or unlock multiplayer after finishing it?
The current full game is a single-player experience. Steam lists Single-player and the PS5 listing specifies one player. Post-game equipment carryover and New Game Plus remain part of that solo progression.
How to assess the purchase
If you want online boss co-op or split-screen, evaluate it as a single-player product. Early video discussion of multiplayer does not establish a currently available feature.
Steam Cloud, achievements and Family Sharing do not indicate co-op. They are separate store features from multiplayer combat.
After finishing
Review accessible collection goals or read the New Game Plus access and carryover rules. Do not reset your current cycle solely to look for a multiplayer menu.