Exactly three
The full trio is required by the official game description.
BOMBANANA is built as online co-op for exactly three players. Each role removes one way to communicate, so the full trio is part of the puzzle rather than an optional lobby size.

The official store describes BOMBANANA as an exactly-three-player online co-op game. Its Blind, Mute, and Deaf roles distribute seeing, hearing, speaking, reading, and operating across the full trio. We found no official two-player mode or native local split-screen claim.
The full trio is required by the official game description.
Players can use the server browser or join through room codes.
Each player receives a different information and communication constraint.
Have all three players restart Steam and confirm the same game version.
Create the room and share the new room code without extra spaces.
Test whether every player can hear and speak before starting Campaign.
If joining fails, create a fresh room with another player as host to isolate the problem.
| Question | Current answer |
|---|---|
| Can I play solo? | No official solo mode is listed; the game requires exactly three monkeys. |
| Can two or four people play? | No official variable-size mode is listed: the developer says “no more, no less.” |
| Do all three need to be Steam friends? | No. The official launch feature notes say players can join through the server browser or room codes without adding each other first. |
| Can I find public players? | Yes. The official feature notes describe a global public lobby browser. |
| Is local split-screen supported? | No official local co-op or split-screen feature is listed on Steam. |
Official store and news checked September 8, 2026. Unsupported modes are described as unlisted, not as promises that they can never be added.