How to play Seamshift Arena

Choose a surface

Torus mode pairs red left with right and cyan top with bottom. Every crossing preserves orientation. Möbius Strip mode pairs only the red edges, reflects height, and reverses vertical direction; cyan is a physical boundary. Choose while the run is idle.

Start a 75-second run

Press Start 75s Run. Move the blue round explorer with WASD, arrow keys, or the four large touch buttons. A white wedge inside the token makes its orientation visible without turning it into a vehicle or shooter object.

Collect and avoid

Gather twelve golden winged seeds or red berries to finish early. Thorny green burrs and dry bramble knots cost one life. After a hit, the token briefly flashes and ignores another collision so one overlap cannot remove all three lives.

Watch seam ghosts

A dashed copy appears at the equivalent entry position when the token nears a joined edge. In Möbius mode its height and vertical orientation are reflected. The status line names each crossing. Top and bottom reflections in Möbius mode are boundaries, not seam crossings.

Results and replay

A run completes when twelve seeds are collected or the timer reaches zero. Losing all three lives ends it early. Score combines seeds, remaining lives, and time. Replay keeps the selected surface; after the result you can also choose the other mode and compare the mapping directly.