Games like Nova Flow
Games like Nova Flow include Portal 2, Bright Memory: Infinite, Black Mesa, A Story About My Uncle, and Half-Life 2. We matched them by the tags players give Nova Flow on Steam (Indie, Casual, Action, Sci-fi, and Singleplayer): closest matches first, and among equally close ones the better-known games.
Portal 2
Shared: Singleplayer · Platformer · First-Person
Bright Memory: Infinite
Shared: Action · Indie · Singleplayer
Black Mesa
Shared: Action · Sci-fi · Singleplayer
A Story About My Uncle
Shared: Indie · Singleplayer · First-Person
Half-Life 2
Shared: Action · Sci-fi · Singleplayer
Defy Gravity Extended
Shared: Indie · Platformer · Action
SUPERHOT
Shared: Action · Indie · Singleplayer
Portal
Shared: Singleplayer · Sci-fi · First-Person
BEEP
Shared: Indie · Platformer · Singleplayer
Skul: The Hero Slayer
Shared: Indie · Action · Singleplayer
Clustertruck
Shared: Action · Indie · Singleplayer
Dead Bits
Shared: Indie · Casual · Action
BioShock Infinite
Shared: Action · Singleplayer · First-Person
Polarity
Shared: Indie · First-Person · Singleplayer
Minimalism
Shared: Indie · Casual · Action
Beyond Gravity
Shared: Casual · Indie · Action
KovaaK's
Shared: Action · Indie · First-Person
Hollow Knight
Shared: Platformer · Indie · Singleplayer
Rogue Legacy
Shared: Indie · Platformer · Action
MO:Astray
Shared: Indie · Action · Sci-fi
Angels Fall First
Shared: Indie · Action · Sci-fi
Dust: An Elysian Tail
Shared: Action · Indie · Platformer
DeadCore
Shared: Indie · Action · Platformer
Valley
Shared: Indie · First-Person · Singleplayer