Cosmic Express

You lay train tracks across small space stations, connecting the start and exit while bringing alien passengers to their matching homes. The central challenge is working out a route that visits the necessary places in the right order.

Each station is a self-contained route-planning puzzle. You decide where the track turns and how to sequence pickups and drop-offs, with layouts that test spatial reasoning and make a misplaced segment capable of spoiling the plan.

Levels are grouped into constellations, and new areas introduce additional mechanics, including teleportation and aliens that affect whether other passengers will board. Later puzzles combine these ideas, with extra monolith challenges adding new conditions to selected levels.

Players often praise the inventive route puzzles, the satisfaction of finding a solution, and the cute, clean presentation. Some also enjoy the simple rules and soundtrack. Difficulty is a recurring point of division: while some find the challenge rewarding, others say later or larger puzzles can become frustrating and rely too much on trial and error.