Perfect Execution Games has opened the playtest for MarchMallows, a Lemmings-like co-op puzzle game for one to four players where the Marchies walk into anything you fail to protect them from.

The playtest includes a co-op campaign, a set of competitive minigames and a level editor that lets players build and share their own puzzles. It stays open until the demo releases, and the build is updated continuously during that time.

Players can request access from the Steam page. MarchMallows is being made by one developer in Stockholm.