Games like Depthdrops
Games like Depthdrops include Waveform, Defy Gravity Extended, Moncage, Peggle Deluxe, and SpaceEngine. We matched them by the tags players give Depthdrops on Steam (Casual, Puzzle, 3D, Sci-fi, and Score Attack): closest matches first, and among equally close ones the better-known games.

Waveform
Shared: Puzzle · Casual · Indie

Defy Gravity Extended
Shared: Puzzle · Indie · Casual

Moncage
Shared: Casual · Puzzle · Singleplayer

Peggle Deluxe
Shared: Casual · Puzzle · Singleplayer

SpaceEngine
Shared: Casual · Sci-fi · 3D

hololive Treasure Mountain
Shared: Casual · Puzzle · Score Attack

Donut County
Shared: Casual · Puzzle · Indie

Zup! S
Shared: Casual · Puzzle · Indie

AudioSurf
Shared: Casual · Indie · Arcade

Sizeable
Shared: Casual · Puzzle · 3D

Little Inferno
Shared: Casual · Puzzle · Singleplayer

Tetris® Effect: Connected
Shared: Puzzle · Singleplayer · Casual

Gorogoa
Shared: Puzzle · Casual · Singleplayer

Intergalactic Bubbles
Shared: Casual · Puzzle · Singleplayer

Outer Wilds
Shared: Puzzle · Space · Singleplayer

Librarian: Tidy Up the Arcane Library!
Shared: Casual · Puzzle · Singleplayer

Assemble with Care
Shared: Casual · Puzzle · Indie

Marble Mayhem: Fragile Ball
Shared: Casual · Puzzle · Indie

COCOON
Shared: Puzzle · 3D · Indie

LOCKDOWN Protocol
Shared: Casual · Sci-fi · Space

The Turing Test
Shared: Puzzle · Sci-fi · Singleplayer

Zup!
Shared: Casual · Puzzle · Indie

Zuma's Revenge!
Shared: Casual · Puzzle · Singleplayer

Portal
Shared: Puzzle · Sci-fi · Singleplayer