Games like POP: Methodology Experiment One
Games like POP: Methodology Experiment One include Hotline Miami, Hotline Miami 2: Wrong Number, Katana ZERO, Shovel Knight: Treasure Trove, and To the Moon. We matched them by the tags players give POP: Methodology Experiment One on Steam (Indie, Action, Experimental, Psychedelic, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Hotline Miami
Shared: Action · Indie · Great Soundtrack

Hotline Miami 2: Wrong Number
Shared: Great Soundtrack · Action · Pixel Graphics

Katana ZERO
Shared: Action · Pixel Graphics · Great Soundtrack

Shovel Knight: Treasure Trove
Shared: Indie · Pixel Graphics · Great Soundtrack

To the Moon
Shared: Indie · Great Soundtrack · Pixel Graphics

Pizza Tower
Shared: Indie · Great Soundtrack · Pixel Graphics

UBERMOSH
Shared: Action · Indie · Pixel Graphics

Out There Somewhere
Shared: Indie · Pixel Graphics · Action

UFO 50
Shared: Indie · Action · Pixel Graphics

Hyper Light Drifter
Shared: Indie · Great Soundtrack · Pixel Graphics

Axiom Verge
Shared: Indie · Action · Pixel Graphics

SANABI
Shared: Action · Pixel Graphics · Indie

The Messenger
Shared: Retro · Indie · Pixel Graphics

Celeste
Shared: Indie · Great Soundtrack · Pixel Graphics

VVVVVV
Shared: Indie · Pixel Graphics · Great Soundtrack

A Bird Story
Shared: Indie · Great Soundtrack · Pixel Graphics

Risk of Rain (2013)
Shared: Indie · Action · Pixel Graphics

Broforce
Shared: Action · Pixel Graphics · Indie

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

Titan Souls
Shared: Indie · Action · Pixel Graphics

Undertale
Shared: Great Soundtrack · Indie · Pixel Graphics

TTV2
Shared: Indie · Action · Pixel Graphics

LOVE
Shared: Indie · Action · Pixel Graphics

Freedom Planet
Shared: Action · Great Soundtrack · Indie