Submachine 3: The Loop

"Submachine 3" is the last game in the series which doesn't develop the storyline much. It's more of a puzzle game than an adventure game. After using the portal in the lighthouse ("Submachine 2"), the player finds him- or herself inside a strange "loop" of identical rooms.

Mechanical devices with logic puzzles (with varying degrees of difficulty, but generally not very hard) are found in some of these rooms and the player's task is to solve all these puzzles step-by-step and to find a way out.