Single-player games like Octopus Invasion
Below are 8 single-player Steam games similar to Octopus Invasion, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Octopus Invasion page.
Ranked picks
- 1
Loopquarium
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Action and Indie with Octopus Invasion.
Loopquarium is an aquarium roguelite where you assemble a school of fish with unique abilities to repel invading apex predators. Start with a group of guppies, grow your population, and balance predator and prey to discover insane combos every run.
- 2
Mineiac
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Indie and Casual with Octopus Invasion.
Mineiac is a fast 2D roguelite about mining: fight the time, break rocks and collect gems. But be careful, each step is supervised by the Mining Inspectorate!
- 3
Ashes of Bronze
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Action and Indie with Octopus Invasion.
Bronze Ashes, a fantasy action roguelite inspired by Sanxingdui and Jinsha, conjures a cyclically reborn otherworld from ancient Shu's legends. Play alone or with friends: command shape-shifting arms, gather Golden Crow spells, and fight to save Shu from impending doom.
- 4
Squoids
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Action and Indie with Octopus Invasion.
Every Squoid Matters! Squoids is a survival top-down arena shooter where you control a frantic swarm of the squid-like namesakes of the game. Maneuver and upgrade your swarm as an ocean's worth of sea creatures come after you. Can you endure long enough to defeat the mysterious final boss?
- 5
Sivers
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Action and Indie with Octopus Invasion.
Sivers is an RPG-roguelike with a unique style, where waves of enemies test your strategy. Use spells and build defenses, develop your hero, and fight bosses and varied foes. Victory on the first try is unlikely — every attempt brings you closer to success!
- 6
Shadows of Beginnings
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Action and Indie with Octopus Invasion.
A dark fantasy action RPG set sixty years after the Great Eclipse, when the sun died for three days. Enter ruined Novum as an Outsider, fight and gather beyond its walls, and rebuild the town. Seamlessly shifting between isometric and over-the-shoulder perspectives.
- 7
Wanderburg
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Action and Indie with Octopus Invasion.
Drive your Castle on Wheels into battle in this minimalist medieval roguelike of roaming fortresses! Devour entire villages, build your modular arsenal of siege machinery and break the game as you grow with every stronghold you crush.
- 8
PinPow
Single-player alternative to Octopus Invasion — playable solo, no multiplayer required. Shares Action and Indie with Octopus Invasion.
PinPow is a turn-based roguelike pinball RPG where you play as a hero sucked into an otherworldly pinball machine - battling your way through chaotic dungeons, and enemies to defeat the evil Pinball Wizard. Strategize your shots, upgrade your hero, and bounce your way to victory!