The takeaway
Solo diving builds instinct; multiplayer reveals it. There is no better mirror for your rarity brain than watching a friend answer the same prompt — and sink past you. Gather your divers.
Multiplayer FAQ
How does krillion multiplayer work?
Two ways: pass-and-play (two divers alternate on one device, same 7 prompts, highest depth wins) or online rooms (a 4-letter code, simultaneous dives, live leaderboard).
Do I need an account for multiplayer?
Pass-and-play works for guests. Online rooms need a signed-in diver account so the leaderboard knows who is who.
Can the same account join a room twice?
No. Room presence is keyed by diver, so one account occupies exactly one seat.