Games like Unium
Games like Unium include Mini Metro, Mini Motorways, Zup! S, Hexcells, and Hexcells Infinite. We matched them by the tags players give Unium on Steam (Casual, Indie, Puzzle, Strategy, and Minimalist): closest matches first, and among equally close ones the better-known games.

Mini Metro
Shared: Puzzle · Strategy · Minimalist

Mini Motorways
Shared: Casual · Strategy · Puzzle

Zup! S
Shared: Casual · Puzzle · Indie

Hexcells
Shared: Casual · Puzzle · Indie

Hexcells Infinite
Shared: Casual · Puzzle · Indie

Baba Is You
Shared: Indie · Puzzle · Singleplayer

Hexcells Plus
Shared: Indie · Casual · Puzzle

Patrick's Parabox
Shared: Puzzle · Minimalist · Indie

ISLANDERS
Shared: Strategy · Puzzle · Indie

Wayout
Shared: Indie · Casual · Puzzle

Plague Inc: Evolved
Shared: Strategy · Indie · Casual

Hook
Shared: Casual · Puzzle · Minimalist

Zup!
Shared: Casual · Puzzle · Indie

LYNE
Shared: Puzzle · Casual · Minimalist

Delete
Shared: Casual · Indie · Puzzle

Game Dev Tycoon
Shared: Indie · Casual · Strategy

Plants vs. Zombies GOTY Edition
Shared: Casual · Strategy · Singleplayer

Zup! 3
Shared: Casual · Puzzle · Indie

Waveform
Shared: Indie · Puzzle · Casual

Sudoku Universe / 数独宇宙
Shared: Casual · Indie · Puzzle

14 Minesweeper Variants
Shared: Puzzle · Casual · Minimalist

The Legend of Bum-Bo
Shared: Indie · Strategy · Puzzle

Zup! X
Shared: Casual · Puzzle · Indie

Moncage
Shared: Casual · Puzzle · Indie