Single-player games like Project Delta
Below are 9 single-player Steam games similar to Project Delta, 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 Project Delta page.
Ranked picks
- 1

Trash Quest
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Trash Quest is a compact metroidvania with a single spawn point, run and gun action and tight platforming. Navigate an interwoven maze of rooms through this space station, destroying robots, collecting power ups and unlocking shortcuts.
- 2

Kalinur
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Defeat the mage Kalinur and bring peace back to the kingdom in this mini metroidvania with a lot of action.
- 3

Astalon: Tears of the Earth
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Adventure with Project Delta.
Uphold your pact with the Titan of Death, Epimetheus! Fight, climb and solve your way through a twisted tower as three unique adventurers, on a mission to save their village from impending doom!
- 4

Timespinner
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Travel back in time to change fate itself, in this beautifully crafted story-driven adventure, inspired by classic 90s action-platformers. Join timekeeper Lunais on her quest for revenge against the empire that killed her family, using time-bending powers to explore a vast, connected world.
- 5

Alwa's Legacy
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Alwa’s Legacy is a modern retro game full of dangerous dungeons, mystic items and ancient secrets. Upgrade your magic and choose your own path in this non-linear adventure game brimming with exploration.
- 6

Chasm
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Explore the depths below a remote mountain town in this procedurally-generated Adventure Platformer. Taking inspiration from hack 'n slash dungeon crawlers and Metroidvania-style platformers, Chasm will immerse you in a fantasy world full of exciting treasure, deadly enemies, and abundant secrets.
- 7

Axiom Verge
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Explore and uncover the mystery of a surreal alien world by blasting aliens and glitching your environment in this intense retro side-scrolling action/adventure.
- 8

Gato Roboto
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Pounce inside of your cozy armored mech and set off on a dangerous trek through an alien underworld full of irritable creatures and treacherous obstacles in a valiant effort to save your stranded captain and his crashed spaceship.
- 9

Destroy Space Aliens
Single-player alternative to Project Delta — playable solo, no multiplayer required. Shares Action and Indie with Project Delta.
Challenge yourself and enter the castle of the Legendary Sir Frank Jones V to destroy invading space aliens! Slash, blast, and dash your way to victory in this retro side-scrolling action/adventure.