Games like Only Down: Not Up!
Games like Only Down: Not Up! include Clustertruck, Chained Together, A Story About My Uncle, Kao the Kangaroo: Round 2 (2003 re-release), and I Am Bread. We matched them by the tags players give Only Down: Not Up! on Steam (Casual, Adventure, Action, 3D Platformer, and Parkour): closest matches first, and among equally close ones the better-known games.
Clustertruck
Shared: Action · Parkour · 3D Platformer
Chained Together
Shared: Adventure · Casual · Platformer
A Story About My Uncle
Shared: Adventure · Parkour · Singleplayer
Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · Casual · Action
I Am Bread
Shared: Adventure · Simulation · 3D Platformer
Getting Over It with Bennett Foddy
Shared: Singleplayer · Casual · Difficult
Haste
Shared: Parkour · 3D Platformer · Action
A Difficult Game About Climbing
Shared: Adventure · Action · Singleplayer
Neon White
Shared: 3D Platformer · Parkour · Action
Climber Animals: Together
Shared: Casual · Simulation · 3D Platformer
Only Climb: Better Together
Shared: 3D Platformer · Platformer · Precision Platformer
Gang Beasts
Shared: Action · Casual · Singleplayer
Portal 2
Shared: Singleplayer · Platformer · 3D Platformer
Crash Bandicoot™ N. Sane Trilogy
Shared: 3D Platformer · Adventure · Platformer
Get To Work
Shared: Adventure · 3D Platformer · Singleplayer
Marvel’s Spider-Man Remastered
Shared: Action · Adventure · Singleplayer
Sonic Adventure 2
Shared: Action · 3D Platformer · Adventure
Wobbly Life
Shared: Adventure · Casual · Simulation
Sonic Frontiers
Shared: Adventure · 3D Platformer · Action
Goat Simulator
Shared: Simulation · Casual · Action
BEEP
Shared: Adventure · Platformer · Action
SpongeBob SquarePants: Battle for Bikini Bottom - Rehydrated
Shared: Adventure · 3D Platformer · Action
Totally Accurate Battle Simulator
Shared: Simulation · Adventure · Singleplayer
Super Fancy Pants Adventure
Shared: Adventure · Action · Casual