Games like Arcadium
Games like Arcadium include SANABI, UFO 50, Vampire Survivors, Katana ZERO, and Exit the Gungeon. We matched them by the tags players give Arcadium on Steam (Action, Arcade, 2D Platformer, 2D, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Pixel Graphics · 2D Platformer

UFO 50
Shared: Action · Pixel Graphics · Indie

Vampire Survivors
Shared: Pixel Graphics · 2D · Indie

Katana ZERO
Shared: Action · Pixel Graphics · 2D Platformer

Exit the Gungeon
Shared: Arcade · Action · Indie

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Action · 2D

Pizza Tower
Shared: 2D Platformer · Indie · Pixel Graphics

Downwell
Shared: Pixel Graphics · Arcade · Action

Super Meat Boy
Shared: 2D Platformer · Indie · Pixel Graphics

Broforce
Shared: Action · Pixel Graphics · 2D

Skul: The Hero Slayer
Shared: Action · Indie · Pixel Graphics

LUFTRAUSERS
Shared: Arcade · Action · Indie

Celeste
Shared: Pixel Graphics · 2D Platformer · Indie

Himno
Shared: 2D · Pixel Graphics · Free to Play

Door Kickers: Action Squad
Shared: 2D Platformer · Action · Pixel Graphics

The Messenger
Shared: Pixel Graphics · Retro · 2D

Gravity Circuit
Shared: Action · 2D · Pixel Graphics

Banana
Shared: 2D · Free to Play · Singleplayer

Timberman
Shared: Action · Pixel Graphics · Indie

Sonic Origins
Shared: Action · 2D Platformer · Pixel Graphics

Hotline Miami
Shared: Action · Pixel Graphics · Indie

Volgarr the Viking
Shared: Action · 2D · Indie

VVVVVV
Shared: Pixel Graphics · 2D Platformer · Indie

Kung Fury: Street Rage - Ultimate Edition
Shared: Arcade · Action · Indie