Games like Trigonarium
Games like Trigonarium include Sky Force Reloaded, Voidigo, Nex Machina, Waves, and Sektori. We matched them by the tags players give Trigonarium on Steam (Local Co-Op, Co-op Campaign, Twin Stick Shooter, Colorful, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.
Sky Force Reloaded
Shared: Local Co-Op · Shoot 'Em Up · Top-Down Shooter
Voidigo
Shared: Twin Stick Shooter · Local Co-Op · Shoot 'Em Up
Nex Machina
Shared: Twin Stick Shooter · Local Co-Op · Shoot 'Em Up
Waves
Shared: Twin Stick Shooter · Shoot 'Em Up · Colorful
Sektori
Shared: Twin Stick Shooter · Colorful · Shoot 'Em Up
Chippy
Shared: Twin Stick Shooter · Top-Down Shooter · Shoot 'Em Up
HELLDIVERS™ Dive Harder Edition
Shared: Local Co-Op · Twin Stick Shooter · Top-Down Shooter
Bounty of One
Shared: Top-Down Shooter · Local Co-Op · Colorful
Geometry Wars™ 3: Dimensions Evolved
Shared: Twin Stick Shooter · Local Co-Op · Shoot 'Em Up
Relic Hunters Zero: Remix
Shared: Twin Stick Shooter · Top-Down Shooter · Local Co-Op
A Dance of Fire and Ice
Shared: Colorful · Singleplayer · Psychedelic
Nine Parchments
Shared: Top-Down Shooter · Local Co-Op · Co-op Campaign
Beat Hazard
Shared: Twin Stick Shooter · Shoot 'Em Up · Colorful
Renegade Ops
Shared: Twin Stick Shooter · Local Co-Op · Shoot 'Em Up
Super Hexagon
Shared: Arcade · Indie · Singleplayer
Cuphead
Shared: Local Co-Op · Difficult · Indie
Geometry Wars: Retro Evolved
Shared: Twin Stick Shooter · Shoot 'Em Up · Arcade
Revolution Ace
Shared: Local Co-Op · Shoot 'Em Up · Action
Greedland
Shared: Twin Stick Shooter · Shoot 'Em Up · Score Attack
RUINER
Shared: Top-Down Shooter · Twin Stick Shooter · Action
Enter the Gungeon
Shared: Local Co-Op · Twin Stick Shooter · Indie
Brotato
Shared: Local Co-Op · Singleplayer · Top-Down Shooter
Ikaruga
Shared: Shoot 'Em Up · Local Co-Op · Arcade
Lovers in a Dangerous Spacetime
Shared: Local Co-Op · Co-op Campaign · Colorful