Games like Trianguluv
Games like Trianguluv include Super Hexagon, LIMBO, UFO 50, Zup! 2, and Zup!. We matched them by the tags players give Trianguluv on Steam (Indie, Action, Adventure, Arcade, and Difficult): closest matches first, and among equally close ones the better-known games.

Super Hexagon
Shared: Indie · Difficult · Arcade

LIMBO
Shared: Indie · Puzzle · Puzzle Platformer

UFO 50
Shared: Indie · Action · Arcade

Zup! 2
Shared: Indie · Puzzle · Fast-Paced

Zup!
Shared: Indie · Puzzle · Fast-Paced

Defy Gravity Extended
Shared: Indie · Puzzle Platformer · Puzzle

Celeste
Shared: Indie · Difficult · Precision Platformer

Downwell
Shared: Indie · Arcade · Action

Geometry Dash
Shared: Difficult · 2D · Indie

Rogue Legacy 2
Shared: Arcade · Action · Indie

Pikuniku
Shared: Indie · Adventure · Puzzle

A Dance of Fire and Ice
Shared: Indie · Difficult · Arcade

Trip to Vinelands
Shared: Indie · Action · Arcade

Zup! S
Shared: Indie · Puzzle · 2D

Zup! 8
Shared: Indie · Puzzle · Fast-Paced

Human Fall Flat
Shared: Adventure · Puzzle · Action

Out There Somewhere
Shared: Indie · Adventure · Puzzle

Jump King
Shared: Indie · Difficult · Adventure

TTV2
Shared: Indie · Action · Arcade

Exit the Gungeon
Shared: Indie · Action · Arcade

BEEP
Shared: Indie · Adventure · Action

Hollow Knight: Silksong
Shared: Indie · Difficult · Adventure

Zup! 4
Shared: Indie · Puzzle · Fast-Paced

Zup! 3
Shared: Indie · Puzzle · Fast-Paced