Single-player games like Guinea Pig Z
Below are 8 single-player Steam games similar to Guinea Pig Z, 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 Guinea Pig Z page.
Ranked picks
- 1
Raining Lead
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Action with Guinea Pig Z.
Twin-stick shooter meets action roguelike in a quest to burn corporate stocks. Mega Giga Corp takes your city. Their stock keeps climbing but you're the correction they didn't hedge against - A constructor of machines ready to burst their bubble. Destroy, loot, upgrade, repeat and lead the revolt.
- 2
Toadled: Eating Frenzy
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Action and Indie with Guinea Pig Z.
Toadled: Eating Frenzy is an action roguelike with an appetite! Play as a toad and eat everything on your path to grow bigger and mutate into new, disgusting forms. Consuming human flesh? Fair game. Police cars, tanks, missiles? Mild indigestion. Try out hundreds of appetizing build combinations!
- 3
Underwater DuO
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Action and Indie with Guinea Pig Z.
In Underwater Duo, control a smashing turtle with your left hand and a blasting jellyfish with your right! Fight off waves of fierce fish, grow stronger, and see if your two hands can conquer the deep… or team up with a perfectly in-sync partner.
- 4
UberLoop
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Action and Strategy with Guinea Pig Z.
Smash your way through endless waves of enemies and grow absurdly powerful! Explore the map, grab loot from shrines, level up with unique upgrades, unlock new characters, and stack wild abilities to create crazy builds as you fend off hordes of creatures!
- 5
Adventure Jam
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Action and Indie with Guinea Pig Z.
Adventure Jam is a level-based adventure game featuring TPS, Roguelike and RPG. Combine Gun in surprising ways to experience diverse Build gameplay and explore procedurally-generated levels. Fighting through hordes of frenzied monsters – with your friends, or on your own.
- 6
Slayer Queen
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Action and Indie with Guinea Pig Z.
A bullet heaven roguelite where rock music, alternative fashion, and the chaos of purgatory collide in intense 3-minute runs. Create powerful weapon builds and fight to the sound of a licensed soundtrack featuring emerging independent artists.
- 7
Tiny Planet Protectors
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Indie and Adventure with Guinea Pig Z.
Welcome to the TPPA! Your assignment: Protect, Clean, and Discover. Collect resources and encounter the inhabitants of nearby galaxies as you also fill your home planet with alien plants, futuristic tools, and uncover the greatest threat to the universe.
- 8
Dream Fortress
Single-player alternative to Guinea Pig Z — playable solo, no multiplayer required. Shares Action and Strategy with Guinea Pig Z.
Dream Fortress combines crazy fast combat and building with strategic and competitive automation. Kill hordes of aliens while gathering resources, crafting gear, and building fortresses on an ever-changing planet. After asserting dominance, summon defeated aliens to devastate opponents in PvP.