Gentoo Rescue is puzzle game with a casual vibe, but deceptively deep gameplay mechanics. The player controls sliding penguins and walruses, with each animal having different goals. Items allow the animals to push, pull, bounce, swap, stop, steal, or explode. There are many emergent interactions to discover between items and other puzzle elements, as well as many surprising twists to be uncovered in a world of puzzles inside puzzles inside puzzles.