Single-player games like Octogeddon
Below are 10 single-player Steam games similar to Octogeddon, 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 Octogeddon page.
Ranked picks
- 1
XALADIA: Rise of the Space Pirates X2
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Strategy with Octogeddon.
Face cosmic threats in "XALADIA", the ultimate twin-stick shooter! Conquer the battlefield with stunning 3D graphics and evolving combat. Use missiles, lasers, barriers to decimate space pirates. Upgrade weapons, unleash a relentless barrage. Experience the real space warfare!
- 2
Survivor Cells
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Indie with Octogeddon.
Discover the beauty and fragility of life in Survivor Cells, a unique survival game against viruses and bacteria, which strategically combines the elements of roguelite, bullet hell and tower defense in a challenging experience. Your destiny depends on your agility and choices. How far will you get?
- 3
Toilet Battle
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Strategy with Octogeddon.
Battle between robot alliance and toilet monster army. Choose your favorite character to fight, silly characters and weird attacks will make a crazy match
- 4
SHOOPER NOVA
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Strategy with Octogeddon.
Craft Your Ultimate Circular Fortress! Dive into SHOOPER NOVA, where you choose props and components to build a unique fortress. Unlock combos to shape your strategy and battle style. Become an unstoppable barrage machine and obliterate waves of enemies from all directions!
- 5
Space Raiders in Space
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Strategy with Octogeddon.
Space Raiders in Space is a wave defense roguelike mixing squad management and tower defence mechanics. Command your almost competent crew to loot weapons and supplies, build defenses, and fight their way through the Bugpocalypse.
- 6
HYPERGUN
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Indie with Octogeddon.
Fight through waves of alien interlopers and save the world as Dewey Owens in HYPERGUN, a fast-paced roguelite shooter centering around a procedural weapon of questionable effectiveness. Enter the simulation. Build the HYPERGUN!
- 7
Run Build Pew!
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Strategy with Octogeddon.
You’re being Bounty-Hunted! Run, Build your ship piece-by-piece and make it work with the parts you find, Destroy outposts and waves of fleets, and Pick your battles carefully to overcome your hunters in this Fast-Paced Top-Down Action Roguelite Shooter.
- 8
Apocalypse Party
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Strategy with Octogeddon.
Apocalypse Party is a 3D top-down action Roguelike game. In this game, you will embark on a new mission to traverse through the Middle Ages and gradually master abilities, and arm yourself to become the strongest survivor through numerous choices.
- 9
Plants vs. Zombies GOTY Edition
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Strategy with Octogeddon.
Zombies are invading your home, and the only defense is your arsenal of plants! Armed with an alien nursery-worth of zombie-zapping plants like peashooters and cherry bombs, you'll need to think fast and plant faster to stop dozens of types of zombies dead in their tracks.
- 10
Hardhat Wombat
Single-player alternative to Octogeddon — playable solo, no multiplayer required. Shares Action and Indie with Octogeddon.
Hardhat Wombat is a cute puzzle-platformer construction game where deftly stacking blocks of poo can make you number one at number two.