Single-player games like Gatekeeper
Below are 15 single-player Steam games similar to Gatekeeper, 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 Gatekeeper page.
Ranked picks
- 1

Hellcome
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
SURVIVE TOGETHER! Hellcome is a 4 multiplayer zombie survival party game
- 2

Gatekeeper: Infinity
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Prologue version of the game Gatekeeper. Gatekeeper: Infinity is a fast-paced rogue-lite shooter where you'll search for the stolen Heart of the Universe and battle machine enemies! Play solo or join forces with friends in co-op mode.
- 3

Reality Core
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Blast through chaotic dungeons and unleash powerful weapons as you journey through the multiverse in search of a way home. Dodge, loot, and survive against deadly foes, extracting hard-won treasures to repair your ship and make it back!
- 4

Roboom
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
You should simply try out Roboom. We have quite a long description below, you can read if you like, but experiencing Roboom yourself or as Co-op is the best.
- 5

HyperFeat
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
A top down 2D space shooter bullethell with roguelike elements awaits you. Dodge, weave and shoot your way through waves of enemies while gaining upgrades trying to survive as long as possible.
- 6

Tankii
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
A slow paced, multiplayer bullet hell where everyone is a tank.
- 7

Too Many CUBES!
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Shatter overwhelming cube swarms in a fast arena-survival roguelite. Aim your evolving arsenal, conquer five hazardous zones, destroy their Guardians, and climb five Fracture difficulty tiers—solo or in two-player local co-op.
- 8

The Spell Brigade
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Survivors-like with ONLINE CO-OP for 1-4 players. Team up with your wizard friends to slay hordes of dark creatures. Complete team-based objectives, unlock new upgrades and create overpowered spell synergies. Friend nor foe is safe in this friendly fire bullet hell!
- 9

Risk of Rain 2
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Escape a chaotic alien planet by fighting through hordes of frenzied monsters – with your friends, or on your own. Combine loot in surprising ways and master each character until you become the havoc you feared upon your first crash landing.
- 10

Terraria
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 11

Rain World
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
You are a nomadic slugcat, both predator and prey in a broken ecosystem. Grab your spear and brave the industrial wastes, hunting enough food to survive, but be wary— other, bigger creatures have the same plan... and slugcats look delicious.
- 12

Hades
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Defy the god of the dead as you hack and slash out of the Underworld in this rogue-like dungeon crawler from the creators of Bastion, Transistor, and Pyre.
- 13

Vampire Survivors
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!
- 14

The Shape of Things
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Indie with Gatekeeper.
Experience a relaxing atmosphere from the comfort of your cozy room by solving small 3D puzzles inside collectible gachapons, and find the original shape of things inspired by Rubik’s style.
- 15

Gatekeeper: Eclipse
Single-player alternative to Gatekeeper — playable solo, no multiplayer required. Shares Action and Indie with Gatekeeper.
Fast-paced rogue-lite shooter. Gatekeeper: Eclipse is a prologue ver. of the game Gatekeeper. Go on a quest to find the stolen Heart of the Universe and shoot your way through the hordes of machine enemies!