Games like Mars: Chaos Menace
Games like Mars: Chaos Menace include Planes, Bullets and Vodka, Bit Blaster XL, BALL x PIT, 20 Minutes Till Dawn, and TouHou Makuka Sai ~ Fantastic Danmaku Festival. We matched them by the tags players give Mars: Chaos Menace on Steam (Action, Casual, Bullet Hell, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

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

Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Action

BALL x PIT
Shared: Action · Bullet Hell · Shoot 'Em Up

20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Casual

TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Action · Bullet Hell · Casual

Vampire Survivors
Shared: Bullet Hell · Casual · Action

Beautiful Mystic Survivors
Shared: Bullet Hell · Shoot 'Em Up · Casual

Chicken Invaders 5
Shared: Action · Casual · Shoot 'Em Up

Cyberhunt
Shared: Action · Casual · Shoot 'Em Up

TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II
Shared: Bullet Hell · Shoot 'Em Up · Action

RADical ROACH Remastered
Shared: Action · Casual · Shoot 'Em Up

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Shoot 'Em Up · Action

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Action

Noobs Want to Live
Shared: Bullet Hell · Action · Casual

Beat Hazard
Shared: Bullet Hell · Shoot 'Em Up · Action

Super Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Action

Heavy Weapon Deluxe
Shared: Casual · Action · Shoot 'Em Up

Greedland
Shared: Shoot 'Em Up · Bullet Hell · Action

Symphony
Shared: Action · Shoot 'Em Up · Casual

Furi
Shared: Bullet Hell · Shoot 'Em Up · Action

LUFTRAUSERS
Shared: Bullet Hell · Action · Shoot 'Em Up

Chicken Invaders 4
Shared: Casual · Action · Shoot 'Em Up

Utopia Must Fall
Shared: Casual · Bullet Hell · Action

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Bullet Hell · Shoot 'Em Up