Games like PLUS ULTRA
Games like PLUS ULTRA include SANABI, Sonic Origins, Broforce, Vampire Survivors, and Katana ZERO. We matched them by the tags players give PLUS ULTRA on Steam (Action, Casual, Interactive Fiction, Point & Click, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Pixel Graphics · 2D Platformer

Sonic Origins
Shared: Action · 2D Platformer · Casual

Broforce
Shared: Action · Pixel Graphics · 2D

Vampire Survivors
Shared: Pixel Graphics · 2D · Casual

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

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Side Scroller · Pixel Graphics

Gravity Circuit
Shared: Action · 2D Platformer · 2D

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

NINJA GAIDEN: Ragebound
Shared: Action · 2D Platformer · Side Scroller

Sonic Mania
Shared: 2D · Action · Pixel Graphics

Bloodstained: Curse of the Moon
Shared: Action · Pixel Graphics · 2D

There Is No Game: Wrong Dimension
Shared: Point & Click · Casual · Pixel Graphics

Gensokyo Night Festival
Shared: Action · Casual · Pixel Graphics

Timberman
Shared: Casual · Action · Pixel Graphics

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

Celeste
Shared: Pixel Graphics · 2D Platformer · 2D

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · 2D

Planes, Bullets and Vodka
Shared: Action · Casual · Retro

Terminator 2D: NO FATE
Shared: Action · 2D Platformer · Side Scroller

Planet of Lana
Shared: Action · 2D Platformer · Female Protagonist

The Messenger
Shared: Action · Pixel Graphics · Retro

UFO 50
Shared: Action · Pixel Graphics · 2D

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

ICEY
Shared: Action · Side Scroller · Female Protagonist