Games like Project: Gemini

Want something that feels fast-paced and retro the way Project: Gemini does? These games offer a similar pull for your backlog. Plenty here let you team up if you like.

Planet Gemini
Planet Gemini is a factory-building and tower defense game. After crash-landing on two planets during an interdimensional journey, fend off waves of enemies and research a portal to survive.
Also in Co-op · Retro, Colorful, Tense
95% of 21 Steam reviews are positivePlayers online now: 2Free
GeminiArms
GeminiArms is a side scrolling 2D shoot'em up.
Also in Co-op · Fast-paced, Retro, Colorful
100% of 4 Steam reviews are positive$14.99
CO-OP : Decrypted
CO-OP is a 2.5D puzzle-platformer. You control two robots; R3D, who can absorb all the light sources around him, and BLU3, who converts that energy into an explosive power. They find themselves in what seems like a recycling facility, with drones analyzing their every move...
Also in Co-op · Colorful, Chaotic
52% of 25 Steam reviews are positive$9.99
Brave Escape
Embark on a thrilling co-op adventure in 'Brave Escape,' a challenging platformer demanding teamwork to conquer perilous traps and treacherous terrain.
Also in Co-op · Fast-paced, Retro, Colorful
98% of 152 Steam reviews are positive$19.99
Twin Cores
Defend a Terraforming station against hordes of enemies in this short coop-only rail-shooter! A unique mix of nostalgic arcade elements and modern coop shooter gameplay. Triumph against your foes and compete for the top of the leaderboard!
Also in Co-op · Fast-paced, Retro, Colorful
94% of 62 Steam reviews are positiveFree
TwinCop
TwinCop is the most cooperative game, EVER. Play this action-packed, co-op, twin-stick shooter with your best bud or significant other. You and your friend are TwinCop: One player controls the right arm; the other controls the left arm; both of you control movement.
Also in Co-op · Fast-paced, Retro, Colorful
89% of 28 Steam reviews are positive$14.99
Guiding Light
Guiding Light is a co-op game in which you and a friend need to rescue stranded aliens from all kinds of sticky situations. One player is an alien who goes down to the planet to execute the rescue operation, while the other pilots the UFO to help guide the alien on the ground.
Also in Co-op · Colorful
84% of 159 Steam reviews are positivePlayers online now: 1Free
The Two of Us
A 2D co-op platformer built around teamwork: puzzle levels you can only clear together, some PvE combat, and a cute, colorful retro look. It is short and silly in the best way, and the fun comes mostly from whoever sits next to you.
Also in Co-op · Retro, Colorful
84% of 5,483 Steam reviews are positivePlayers online now: 2Free
Pitfall Planet
Pitfall Planet is a couch co-op puzzle-solving adventure game set on a distant planet, where you'll need to use teamwork to complete levels and explore the caverns below! Pitfall Planet will put your friendship to the test; will both of you make it out alive?
Also in Co-op · Retro, Colorful, Chaotic
98% of 96 Steam reviews are positive$9.99
NEXO
Troublemaker new cops Lia and Nia wake up an unidentified core during the operation. "Fight to protect the city!"
Also in Co-op · Fast-paced, Colorful, Tense
85% of 33 Steam reviews are positiveFree
被遺棄的雙子 Gemini of the Abandoned
Horror adventure game, player will control the fairy sisters who have been captured alive and help them escape from the dark experimental site, both parties need to share the same blood volume and live and die together.
Fast-paced, Tense
64% of 14 Steam reviews are positive$3.99
Wires And Whiskers
A fast local co-op action-puzzle game: one player is a lab-engineered gerbil, the other its armed exosuit. Dash, shoot and bend magnetism together to survive a ruined trench world. Twenty to thirty minutes, built entirely around two people working as one.
Also in Co-op · Fast-paced, Retro, Chaotic
94% of 1,862 Steam reviews are positivePlayers online now: 8Free

Hidden gems like Project: Gemini

Together: Moon Escape

Two Moonfishers team up through asymmetric puzzles and wobbly parkour, escaping Moontella with plenty of laughs along the way.

$9.99

Wires And Whiskers

Team up as a cybernetic gerbil and its magnetic exosuit to fight mutants and solve puzzles in a post-apocalyptic trench.

Free

Brave Escape

Embark on a thrilling co-op adventure in 'Brave Escape,' a challenging platformer demanding teamwork to conquer perilous traps and treacherous…

$19.99

DEATH IN UNISON

Survive the world's deadliest psychopaths. Experience a unique 2-player co-op experience that puts your teamwork and communication to the test.

$8.99

POPUCOM

Team up to shoot gel, swap colors and solve puzzles on a strange planet, best played together.

$19.99

Shoulders of Giants: Ultimate

Simultaneously control a sword-wielding robot and a gunslinging space frog in Shoulders of Giants, an explosively colourful sci-fi roguelike.

$19.99

Biped 2

Steer a two-legged robot across an alien planet, alone or with up to four friends, and turn every stumble into part of the plan.

I See Me

Overcome the trials by relying on your partner's sights! A 3D co-op game that goes beyond common sense.

Free

Kinduo

Kinduo is a local cooperative game where two elemental friends overcome obstacles to return to their island, push boxes, use electricity to connect…

$1.99

Astrumis - Survive Together

Astrumis - Survive Together is an exclusively co-op horror game.

$9.99

The Two of Us

A cute 2D co-op platformer where puzzle levels only work if you and your partner actually work together.

Free

GUARDS!

GUARDS! is an online co-op fantasy FPS that puts you in the underfunded and over-zealous steel boots of the City Watch.

$9.99

Newest games like Project: Gemini

United Heist: Facility Zero

A co-op puzzle heist for two. One of you breaks into a secret bunker. The other sits in the observation office, watching the bunker.

$6.99

Seeing Double

In this retro-style precision platformer, your screen is split down the middle.

$4.99

Planet Gemini

Planet Gemini is a factory-building and tower defense game. After crash-landing on two planets during an interdimensional journey, fend off waves of…

Free

Together: Moon Escape

Two Moonfishers team up through asymmetric puzzles and wobbly parkour, escaping Moontella with plenty of laughs along the way.

$9.99

GYROPIA

Explore the shattered floating islands after a great catastrophe and chart your path together with your partner!

$4.99

The Inseparables

The Inseparables is a hardcore 2D platformer with local co-op for two players.

$9.99

Biped 2

Steer a two-legged robot across an alien planet, alone or with up to four friends, and turn every stumble into part of the plan.

I See Me

Overcome the trials by relying on your partner's sights! A 3D co-op game that goes beyond common sense.

Free

Bytebond

Split Fiction meets Portal! Bytebond is an electrifying online & couch co-op puzzle game that challenges you to regain control over an infected CPU.

$9.99

Wires And Whiskers

Team up as a cybernetic gerbil and its magnetic exosuit to fight mutants and solve puzzles in a post-apocalyptic trench.

Free

POPUCOM

Team up to shoot gel, swap colors and solve puzzles on a strange planet, best played together.

$19.99

Astrumis - Survive Together

Astrumis - Survive Together is an exclusively co-op horror game.

$9.99