Topobeam

Topobeam is a puzzle game about redirecting lasers across two-dimensional manifolds. Levels use a grid, but the way its sides are glued together lets you, objects and lasers cross between different parts of a level.

Solve with gluings

The grid’s gluings create several phenomena that can be central to solving puzzles:

• A laser can run in a loop without separating the inside from the outside.
• A laser can turn without a mirror.
• You can reorient objects by pushing them around a carefully chosen loop.
• A laser can make a loop with fewer than three 90-degree turns.
• You can get the inside piece out of the box.
• Other phenomena are also possible.