Single-player games like Guinea Pig Gunner
Below are 8 single-player Steam games similar to Guinea Pig Gunner, 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 Gunner page.
Ranked picks
- 1
Pengame
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action and Adventure with Guinea Pig Gunner.
Play as the stickman you drew in your school notebook to defeat the ultimate evil: the TEACHER!
- 2
Warhammer 40,000: Shootas, Blood & Teef
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action and Adventure with Guinea Pig Gunner.
From the developers of the Guns, Gore and Cannoli franchise comes a new 2D run & gun platformer: Warhammer 40,000: Shootas, Blood & TEEF! Spearhead an Ork invasion, destroy the hive city and kill your warboss! ‘Ere we go!
- 3
Operation Hardcore
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action and Adventure with Guinea Pig Gunner.
Operation Hardcore is an action-packed 2D side-scrolling shooter inspired by classic twitchy action games of yesteryear, but with modern touches and conveniences.
- 4
Rise & Shine
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action with Guinea Pig Gunner.
Welcome to Gamearth, a once peaceful planet now threatened by the warmongering Space grunts of Nexgen. In the aftermath of their devastating first strike a child named Rise is forced to take on the sacred gun Shine - and with it the fate of his world.
- 5
Missing Banban
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action and Adventure with Guinea Pig Gunner.
Grab your weapons and delve into this action side-scroller intense adventure. Jump around and explore the insane levels. Shoot and dodge your way through enemies. Fight to find your friend and solve the disappearance!
- 6
KinnikuNeko: SUPER MUSCLE CAT
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action and Adventure with Guinea Pig Gunner.
Join KinnikuNeko, a cat with a bodybuilder's body, in this fun 2D platformer and fight against the mysterious alien invasion. A story full of goofy humor, friendship, drama and action. Its aesthetics are a love letter to 90s anime along with an unforgettable soundtrack.
- 7
MARSUPILAMI - HOOBADVENTURE
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action and Adventure with Guinea Pig Gunner.
Discover the Marsupilamis as you have never seen them before in an adventure full of surprises!
- 8
ZOE Begone!
Single-player alternative to Guinea Pig Gunner — playable solo, no multiplayer required. Shares Action with Guinea Pig Gunner.
A frenetic hand-drawn bullet hell shooter, blending run-and-gun mechanics with classic shmup action in looping arenas. Inspired by drawn-on-film animation of the 1930's - shoot, dash and pound your way through the Animator's creations.