Games like Nullstar: Solus
Games like Nullstar: Solus include SANABI, Celeste, Katana ZERO, Skul: The Hero Slayer, and VVVVVV. We matched them by the tags players give Nullstar: Solus on Steam (Action, Adventure, Platformer, 2D Platformer, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Pixel Graphics · Adventure

Celeste
Shared: Pixel Graphics · Platformer · 2D Platformer

Katana ZERO
Shared: Action · Pixel Graphics · Platformer

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

VVVVVV
Shared: Platformer · Pixel Graphics · 2D Platformer

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

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · Adventure

Out There Somewhere
Shared: Platformer · Adventure · Pixel Graphics

MO:Astray
Shared: Action · Adventure · Pixel Graphics

Downwell
Shared: Pixel Graphics · Platformer · Action

Himno
Shared: Platformer · Pixel Graphics · Adventure

Rogue Legacy 2
Shared: Action · Platformer · Adventure

Sonic Origins
Shared: Action · Adventure · 2D Platformer

BlazBlue Entropy Effect
Shared: Action · Platformer · Pixel Graphics

Ori and the Will of the Wisps
Shared: Platformer · Action · Adventure

Axiom Verge
Shared: Platformer · Action · Pixel Graphics

Owlboy
Shared: Adventure · Pixel Graphics · Platformer

Broforce
Shared: Action · Pixel Graphics · Platformer

Exit the Gungeon
Shared: Action · Adventure · Indie

The Messenger
Shared: Platformer · Pixel Graphics · Action

Gravity Circuit
Shared: Action · Platformer · Pixel Graphics

Phoenotopia: Awakening
Shared: Action · Adventure · Platformer

Gato Roboto
Shared: Action · Adventure · Pixel Graphics