Games like Foxyland 2
Games like Foxyland 2 include Broforce, Shovel Knight: Treasure Trove, Cuphead, Celeste, and Sonic Mania. We matched them by the tags players give Foxyland 2 on Steam (Indie, Action, Adventure, Platformer, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · Pixel Graphics · Indie

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

Cuphead
Shared: Platformer · Indie · Local Co-Op

Celeste
Shared: Indie · Pixel Graphics · Platformer

Sonic Mania
Shared: Platformer · 2D · Pixel Graphics

SANABI
Shared: Action · Pixel Graphics · Adventure

Hollow Knight
Shared: Platformer · Indie · 2D

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

Pizza Tower
Shared: Indie · Platformer · Pixel Graphics

Hollow Knight: Silksong
Shared: Indie · Platformer · 2D

Out There Somewhere
Shared: Indie · Platformer · Pixel Graphics

Rayman® Legends
Shared: Adventure · Platformer · Action

Katana ZERO
Shared: Action · Pixel Graphics · Platformer

Axiom Verge
Shared: Indie · Platformer · Pixel Graphics

The Messenger
Shared: Platformer · Pixel Graphics · Indie

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

Hyper Light Drifter
Shared: Indie · Pixel Graphics · Adventure

Jump King
Shared: Indie · Adventure · Pixel Graphics

Pikuniku
Shared: Indie · Adventure · Action

Super Meat Boy
Shared: Indie · Platformer · Pixel Graphics

UFO 50
Shared: Indie · Action · Pixel Graphics

BADLAND: Game of the Year Edition
Shared: Indie · Adventure · Action

Risk of Rain (2013)
Shared: Indie · Action · Platformer

Gato Roboto
Shared: Indie · Action · Adventure