How this board is judged
S and A mean the machine covers a job the wider beach demands. B means it is the right early step. C means it is only the starter. Prices are not published, so the rank is about role, not a damage score.
Rankings
Stop The Tsunami! Machines rankings from S through D. This is an editorial board from published topics, not a live meta snapshot.

Player wiki for Stop The Tsunami! on Roblox: sand walls, trenches, machines, materials, co-op roles, and the code box.
S and A mean the machine covers a job the wider beach demands. B means it is the right early step. C means it is only the starter. Prices are not published, so the rank is about role, not a damage score.
Claim the Daily Spin and daily rewards, then build a continuous packed sand wall with a trench before you press START ROUND. Spend the coins from waves you hold on the next tool you can actually use.
No active or expired code strings are confirmed for this game. Check the session after updates, and do not enter strings copied from unverified lists.
The official game description says joining the Beach Club group grants a free Rewind. The exact group page is not named in that description, so use the join prompt inside the game.