Games like Nefarious
Games like Nefarious include Hollow Knight, Hollow Knight: Silksong, Shovel Knight: Treasure Trove, Dust: An Elysian Tail, and Pizza Tower. We matched them by the tags players give Nefarious on Steam (Indie, Adventure, Action, Villain Protagonist, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · Indie · 2D

Hollow Knight: Silksong
Shared: Indie · Great Soundtrack · 2D

Shovel Knight: Treasure Trove
Shared: Indie · Platformer · Adventure

Dust: An Elysian Tail
Shared: Action · Indie · Platformer

Pizza Tower
Shared: Indie · Great Soundtrack · Platformer

Skul: The Hero Slayer
Shared: Indie · Action · 2D

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

CARRION
Shared: Villain Protagonist · Action · Indie

Celeste
Shared: Indie · Platformer · Great Soundtrack

Angry Video Game Nerd Adventures
Shared: Indie · Action · Platformer

Katana ZERO
Shared: Action · Indie · Platformer

Out There Somewhere
Shared: Indie · Platformer · Adventure

Rayman® Legends
Shared: Adventure · Platformer · Action

BEEP
Shared: Indie · Adventure · Platformer

Pumpkin Jack
Shared: Adventure · Action · Indie

GRIS
Shared: Indie · Adventure · Great Soundtrack

Broforce
Shared: Action · Indie · 2D

Axiom Verge
Shared: Indie · Platformer · Action

SANABI
Shared: Action · Adventure · Indie

Pikuniku
Shared: Indie · Adventure · Action

Guacamelee! Gold Edition
Shared: Indie · Action · Platformer

Deadlight
Shared: Indie · Action · Platformer

UnEpic
Shared: Indie · Action · Platformer

No Time To Explain Remastered
Shared: Indie · Adventure · Action