Games like P.3
Games like P.3 include Vampire Survivors, Cyberhunt, Bit Blaster XL, Planes, Bullets and Vodka, and UFO 50. We matched them by the tags players give P.3 on Steam (Action, Indie, Casual, Roguelite, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Roguelite · Indie · 2D

Cyberhunt
Shared: Action · Indie · Casual

Bit Blaster XL
Shared: Shoot 'Em Up · Action · Casual

Planes, Bullets and Vodka
Shared: Action · Casual · Shoot 'Em Up

UFO 50
Shared: Indie · Action · Retro

Skul: The Hero Slayer
Shared: Action · Indie · Roguelite

Ikaruga
Shared: Action · Shoot 'Em Up · Indie

PAC-MAN™ Championship Edition DX+
Shared: Action · Retro · Classic

Nova Drift
Shared: Shoot 'Em Up · Roguelite · Action

Defy Gravity Extended
Shared: Indie · Action · 2D

BALL x PIT
Shared: Action · Roguelite · Shoot 'Em Up

LUFTRAUSERS
Shared: Indie · Action · Shoot 'Em Up

Megabonk
Shared: Indie · Roguelite · Action

Timberman
Shared: Casual · Indie · Action

ZeroRanger
Shared: Indie · Action · Shoot 'Em Up

Star Saviors
Shared: Action · Indie · Shoot 'Em Up

Streets of Rage 4
Shared: Action · Indie · 2D

Rogue Legacy 2
Shared: Action · Indie · Roguelite

Starblast
Shared: Action · Indie · Casual

METAL SLUG X
Shared: Action · Shoot 'Em Up · 2D

Distant Space
Shared: Indie · Shoot 'Em Up · Action

Hades
Shared: Indie · Roguelite · Action

Octogeddon
Shared: Action · Indie · Casual

Trip to Vinelands
Shared: Action · Indie · Casual