What to know
Online co-op is confirmed
Yes. BOMBANANA! is listed on Steam with multiplayer, co-op, and Online Co-op support. The store page describes the game as a three-player bomb defusal team where players must work under limited time and limited communication.
This is not just a generic multiplayer tag. The official description frames BOMBANANA! around a fixed team of three monkeys, so multiplayer is the central design rather than an optional side mode.
How the three-player role setup works
The core team is made of a blind monkey, a mute monkey, and a deaf monkey. The blind monkey can interact with the bomb, the mute monkey has access to the manual, and the deaf monkey can see and speak but cannot hear.
That setup creates an asymmetric co-op loop: one player may have the hands, another may have the rules, and another may be the communication bridge. The challenge is not only solving bomb modules but building a working communication chain with friends.
Voice and communication limits
Steam lists voice chat as a feature, and the official game description says in-game voice chat is restricted by role. That matters for searchers comparing BOMBANANA! with other bomb defusal games, because role-limited communication is the hook.
Players should expect misunderstanding to be part of the game. The Steam page emphasizes body language, limited information, and the need to invent a method for passing signals under pressure.
Local co-op and crossplay status
Local co-op is not listed on Steam. The confirmed feature is Online Co-op, so do not assume couch co-op or split-screen support unless Lefto Studio confirms it later.
Crossplay is also not confirmed. Since Windows is the only listed platform right now, there is no confirmed console or multi-platform setup for crossplay to connect.
Related multiplayer questions
If you only need the lobby size, the short answer is exactly three players. Solo, duo, and four-player modes are not confirmed.
If you want to try the game with friends before launch, check the demo page and the Steam page for current demo access.
What makes it different from ordinary co-op
Most co-op games let every player see similar information and talk freely. BOMBANANA! appears to make the missing information the main obstacle. The fun is not only pressing the correct buttons on a bomb, but discovering how to describe what you cannot see, hear, or say.
That is why the three-player count matters for SEO and for players. Someone searching for BOMBANANA! multiplayer is probably not just asking whether online play exists; they are asking what kind of co-op problem the game is built around.
For now, the answer should stay anchored to Online Co-op and three-player teamwork.