Before the first wave
Stop The Tsunami! starts you with a toy spade. The first job is a sand barrier between the water and the town, not a vehicle shopping trip.
- Claim the Daily Spin and the daily rewards before you spend time digging.
- If the game offers a Beach Club group join, use that prompt. The official description says the group grants a free Rewind.
- Dig sand and pile it into one continuous line across the stretch the water can reach.
- Make the pile thick enough to stand and tall enough for the first wave. A thin ribbon of sand washes through.
- Carve a trench so overflow has somewhere to go instead of running straight into town.
- Pack the sand hard. Loose piles lose shape when the wave hits.
- Walk the line and close gaps, including the corners.
- Press START ROUND only after that line is closed.
What a successful first round looks like
The wave hits and the town stays dry. Holding the wave pays coins. Those coins are for the next tool, not for rebuilding the same thin wall taller.
Easy is the right place to learn the dig, pile, trench, and pack rhythm. Medium and Hard use the same actions with stronger waves.
What to buy first
Move from the toy spade to shovels as soon as the shop price is affordable. Faster digging matters more than a vehicle you cannot yet keep busy. The official ladder after shovels is a bulldozer, a skid steer, excavators, and a dump truck.
If the first wave breaks the wall
Look for the opening rather than adding random height. Water uses a gap, an unpacked section, or a corner that never got sand. Close that point, pack it, and run the round again on Easy.