Games like Opus Ludum
Games like Opus Ludum include Dorfromantik, Portal, LYNE, Zup! S, and Zup! F. We matched them by the tags players give Opus Ludum on Steam (Puzzle, Puzzle Platformer, Science, Logic, and Family Friendly): closest matches first, and among equally close ones the better-known games.

Dorfromantik
Shared: Puzzle · Board Game · Family Friendly

Portal
Shared: Puzzle · Puzzle Platformer · Physics

LYNE
Shared: Puzzle · Logic · Procedural Generation

Zup! S
Shared: Puzzle · Physics · Logic

Zup! F
Shared: Puzzle · Physics · Puzzle Platformer

LIMBO
Shared: Puzzle Platformer · Puzzle · Indie

The Pedestrian
Shared: Puzzle · Puzzle Platformer · Logic

Hook
Shared: Puzzle · Family Friendly · Logic

Zup! Zero
Shared: Puzzle · Physics · Puzzle Platformer

Zup!
Shared: Puzzle · Physics · Puzzle Platformer

Zup! 8
Shared: Puzzle · Physics · Puzzle Platformer

Trine 2: Complete Story
Shared: Puzzle Platformer · Puzzle · Family Friendly

Zup! 2
Shared: Puzzle · Physics · Puzzle Platformer

Zup! X
Shared: Puzzle · Physics · Puzzle Platformer

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Physics

Zup! 3
Shared: Puzzle · Physics · Puzzle Platformer

The Bridge
Shared: Puzzle Platformer · Puzzle · Physics

Is This Seat Taken?
Shared: Puzzle · Logic · Family Friendly

Akin
Shared: Puzzle · Puzzle Platformer · Logic

Zup! 5
Shared: Puzzle · Physics · Puzzle Platformer

Hexcells Infinite
Shared: Puzzle · Logic · Casual

Zup! Z
Shared: Puzzle · Physics · Puzzle Platformer

Oik 3
Shared: Puzzle · Physics · Minimalist

Portal 2
Shared: Puzzle · Puzzle Platformer · Physics