Games like Experiment 73
Games like Experiment 73 include Portal 2, Braid, Plants vs. Zombies GOTY Edition, SANABI, and Katana ZERO. We matched them by the tags players give Experiment 73 on Steam (Strategy, Puzzle, Casual, Platformer, and 2D Platformer): closest matches first, and among equally close ones the better-known games.
Portal 2
Shared: Puzzle · Platformer · Singleplayer
Braid
Shared: Puzzle · 2D Platformer · Platformer
Plants vs. Zombies GOTY Edition
Shared: Strategy · Casual · 2D
SANABI
Shared: Pixel Graphics · 2D Platformer · Story Rich
Katana ZERO
Shared: Pixel Graphics · Platformer · 2D Platformer
Gunpoint
Shared: Puzzle · 2D · Strategy
Celeste
Shared: Platformer · Pixel Graphics · 2D Platformer
FEZ
Shared: Puzzle · Platformer · Pixel Graphics
Papers, Please
Shared: Puzzle · Pixel Graphics · Singleplayer
There Is No Game: Wrong Dimension
Shared: Puzzle · Casual · Pixel Graphics
Zup! S
Shared: Puzzle · Casual · 2D
Mini Metro
Shared: Strategy · Puzzle · Casual
BEEP
Shared: Platformer · Puzzle · 2D
Unpacking
Shared: Casual · Puzzle · Pixel Graphics
Out There Somewhere
Shared: Platformer · Puzzle · Pixel Graphics
Peggle Deluxe
Shared: Puzzle · Casual · 2D
Bridge Constructor Portal
Shared: Puzzle · Strategy · 2D
Ninja Kiwi Archive
Shared: Strategy · Casual · Platformer
OneShot
Shared: Puzzle · Pixel Graphics · Story Rich
Scribblenauts Unlimited
Shared: Puzzle · Casual · 2D
Thomas Was Alone
Shared: Platformer · 2D Platformer · Sci-fi
The Escapists
Shared: Strategy · Pixel Graphics · 2D
Death Coming/死神来了
Shared: Strategy · Casual · Puzzle
Defy Gravity Extended
Shared: Puzzle · Platformer · 2D