Raft Battle Multiplayer takes the raft-survival premise online: several players, several rafts, open water, and no way to avoid each other for long.
Because everyone is doing the same thing — salvaging, upgrading, fighting — the raft you meet in ten minutes will be considerably tougher than the one you met at the start.
Yes — you share the water with other players in real time, each building up their own raft.
Pick your fights. Salvaging while other players commit to each other, then engaging the weakened survivor, works far better than initiating.
Yes — it runs in the browser with nothing to install.