Undoubtedly inspired by shmup classics such as Darius and Xenon 2: Megablast, sepia-tinted underwater shooter Earth Atlantis has you hunting down giant sea monsters in a postapocalyptic future.

Earth Atlanis' monster hunting takes places in one huge level. It is technically not an open world since progress is somewhat gated by the game's many bosses, but it sure does feel like one.

However, this doesn't mean that there's a straight line between these important fights. You have to find your way through an underwater maze and fight off thousands of smaller sea creatures in fast-paced firefights. These lesser enemies also drop power-ups, which prepare your tiny vessel for the things to come.

25 giant bosses are waiting to be vanquished, and these fights can be tense, with some attacks killing you in one blow. Squids, sharks, nautili, weird big things with way too many tentacles, and other assorted creatures really do mind you trespassing in their waters.

The game's art style is also remarkable, with a sketched, sepia-colored look that's quite unlike anything else out there.

When it was released for the Nintendo Switch last fall, Earth Atlantis had a bit of a balance problem, with some boss fights being nigh-impossible. These issues have since been fixed, but don't think that those bosses are pushovers now. Looking at you there, monstrous spiky octopus... thing.

You can purchase Earth Atlantis on the Nintendo Switch eshop. PS4 and Xbox One versions, as well as an iOS port, have recently been released. For more information, visit the game's website and follow developer Pixel Perfex on Facebook and Twitter.