Games like IKARUS
Games like IKARUS include Vampire Survivors, Touhou Hero of Ice Fairy, ICEY, Rabbit and Steel, and Rabi-Ribi. We matched them by the tags players give IKARUS on Steam (Side Scroller, Bullet Hell, Deckbuilding, 1990's, and Anime): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Bullet Hell · Action Roguelike · Action
Touhou Hero of Ice Fairy
Shared: Bullet Hell · Side Scroller · Anime
ICEY
Shared: Side Scroller · Action · Anime
Rabbit and Steel
Shared: Bullet Hell · Anime · Class-Based
Rabi-Ribi
Shared: Bullet Hell · Anime · Side Scroller
Enter the Gungeon
Shared: Bullet Hell · Action Roguelike · Twin Stick Shooter
Windowkill
Shared: Bullet Hell · Action · Twin Stick Shooter
Megabonk
Shared: Bullet Hell · Action · Action Roguelike
One Step From Eden
Shared: Deckbuilding · Action · Action Roguelike
Soulstone Survivors
Shared: Bullet Hell · Action · Action Roguelike
BALL x PIT
Shared: Bullet Hell · Action · Action Roguelike
DRAINUS
Shared: Action · Bullet Hell · Side Scroller
UBERMOSH:BLACK
Shared: Bullet Hell · Action · Anime
Nova Drift
Shared: Bullet Hell · Action · Action Roguelike
Dungeon Munchies
Shared: Action · Anime · Side Scroller
永远消失的幻想乡 ～ The Disappearing of Gensokyo
Shared: Bullet Hell · Anime · Action
Deathsmiles
Shared: Bullet Hell · Action · Anime
Slime 3K: Rise Against Despot
Shared: Bullet Hell · Deckbuilding · Action Roguelike
Rogue: Genesia
Shared: Bullet Hell · Action · Twin Stick Shooter
Slay the Spire 2
Shared: Deckbuilding · Card Game · Indie
Skul: The Hero Slayer
Shared: Action · Side Scroller · Indie
Time Wasters
Shared: Bullet Hell · Twin Stick Shooter · Anime
TEVI
Shared: Bullet Hell · Anime · Side Scroller
Hand of Fate
Shared: Deckbuilding · Card Game · Action