36 similar games
Games like Test Subject Blue
Browser games that play like Test Subject Blue, closest match first. Lime means it runs right here.

Perform a series of tests with warping portals for the watching scientist. The games below have the most in common with it — puzzle platformer, platform, science fiction — ranked by how closely they match, favouring the ones you can play right here in your browser.
Top picks
The 10 closest to Test Subject Blue
- Test Subject GreenPlays on nitrome.com
The second chapter in the test subject series with new developments afoot! In common: puzzle platformer, science fiction, platform.
- Test Subject CompletePlays on nitrome.com
The concluding part to the action puzzle platforming Test Subject series. In common: science fiction, platform.
- Save The DevPlays on prismagamelab.itch.io
In a game from the 90s, you play as Henry, the egocentric creator of the game, who got stuck inside his own creation. In common: puzzle platformer, science fiction, platform.
- Deliver to When You CamePlays on justcamh.itch.io
Deliver the meal. In common: puzzle platformer, science fiction, platform.
- Moss MossPlays on noelcody.itch.io
Play Moss Moss to moss the world and find secrets. In common: puzzle platformer, platform.
- Portal: The Flash VersionPlays here
A free flash game inspired by Valve's Portal. In common: puzzle platformer, science fiction.
- Gravity SnakePlays here
Gravity Snake is a 2D puzzle game that follows the adventures of a cute snake able to fold its body to squeeze through hard-to-reach areas. In common: puzzle platformer, platform.
- Moonleap 2600Plays here
A fan-made demake of the game Moonleap, imagining what it would look like on the Atari 2600. In common: puzzle platformer, platform.
- PyrotoadPlays here
Pyrotoad is an action platformer where you leap, shoot, and puzzle your way through 35 challenging stages. In common: puzzle platformer, platform.
- Rota: Bend GravityPlays here
Rota is a gravity bending puzzle platforming adventure! In common: puzzle platformer, platform.
All matches
Every game like Test Subject Blue
PlayableTest Subject Green
Puzzle Platformer · 2011
PlayableTest Subject Complete
Science fiction · 2013
PlayableAlphaSave The Dev
Retro · 2026
PlayableDeliver to When You Came
Physics · 2023
PlayableMoss Moss
Metroidvania · 2026
PlayablePortal: The Flash Version
Bloody · 2007
PlayableGravity Snake
Casual · 2021
PlayableMoonleap 2600
Demake · 2026
PlayablePyrotoad
Controller Recommendation · 2025
PlayableRota: Bend Gravity
Casual · 2022

Unstable Engineer
Puzzle Platformer · 2019
PlayableDeepest Sword
Sword · 2021
PlayableA Grave Mistake
Ghosts · 2024
PlayableBulbo's Belief System
Puzzle Platformer · 2025
PlayableJelly Escape
Puzzle Platformer · 2012
PlayableLoop Frogs
Frog · 2020
PlayableMink
Cats · 2025
PlayableMirror Wizard
Puzzle Platformer · 2023
PlayableRestless Wing Syndrome
Difficult · 2020
PlayableSnakeBird NES
Casual · 2021
PlayableSnekburd
Casual · 2025
PlayableSulka
2D · 2021
PlayableWilt
Game Jam · 2024
PlayableMoney Movers 2
Local Co Op · 2015
PlayableOrul
Puzzle Platformer · 2019
PlayableGunbrick
Science fiction · 2014
PlayableRustyard
Post Apocalyptic · 2009
PlayableTower of Heaven
Retro · 2010
PlayableBlink
2D · 2022
PlayableColor Theory
Pixel Graphics · 2010
PlayableFade
2D · 2025
PlayableOne More Treasure
Retro · 2025
PlayablePrimary
Newgrounds · 2010
PlayableVacuous Sugar Quest
2 D Platformer · 2025
PlayableBetaWarpswap
2D · 2020
PlayableBetaWhiskers in the Dark
Physics · 2023