Single-player games like X-Mutation
Below are 8 single-player Steam games similar to X-Mutation, 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 X-Mutation page.
Ranked picks
- 1

Robot Arena Survivors
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and RPG with X-Mutation.
Robot Arena Survivors is a single-player arena auto-shooter where you're fighting against waves of hostile robots using a powerful arsenal made of hover tank units. Customize your own set of abilities and dismantle your enemies to claim your fame into the leaderboards.
- 2

POOBO
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and Indie with X-Mutation.
A fast-paced action roguelike where you play as a tiny and adorable poop fighting off bacteria. Upgrade your weapons and items to escape the toilet and claim victory!
- 3

Sharded World
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and Indie with X-Mutation.
Sharded World is a reversed bullet hell, rogue-lite, ARPG game combining simple gameplay and great rpg progression. Each level has its own unique features and challenges. Upgradable characters, weapons and orbs. Challenges, daily quests, and leaderboards. Fight, get stronger and defeat the Lich!
- 4

Extremely Powerful Capybaras
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and Indie with X-Mutation.
Become the bullet hell as a Capybara in this roguelite adventure! Brave the chaos solo or with up to 4 friends, forge your path through hordes of enemies, gather capy-powering weapons & skills and embrace your inner capybara in this action-packed bullet heaven frenzy!
- 5

Voids Vigil
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and Indie with X-Mutation.
Blast through robotic hordes in this arena auto-battler rogue-lite Brotato-like. Use auto-firing weapons and drones, timely dashes and special abilities to reach the Void where a final Conservator awaits convergence. Spend your Cogs wisely within the varied shops to create unique builds!
- 6

Bounty of One
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and Indie with X-Mutation.
Fallen hero of the Wild West, you’re wanted and in disgrace! Grab your guns, survive endless hordes of bounty hunters and fight to clear your name! Bounty of One is a fast-paced casual roguelite bullet hell for 1 to 4 players. Dash, Dodge, Shoot, Repeat!
- 7

FatalZone
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and Indie with X-Mutation.
FatalZone is an auto shooter with roguelike and RPG elements set in a savage world of zombies. Exterminate zombie hordes, collect resources, upgrade your camp, and level up mercenaries. Humanity must survive at any cost!
- 8

Yet Another Zombie Survivors
Single-player alternative to X-Mutation — playable solo, no multiplayer required. Shares Action and Indie with X-Mutation.
The Horde is coming but you're ready to fight it! Assemble your team and decide upon their enhancements to find the most efficient synergies against thousands of the undead. Survive. Then evolve. Then break all the limits in this deceivingly simple but addictive bullet heaven game.