Games like Jets'n'Guns 2
Games like Jets'n'Guns 2 include Hotline Miami, Cuphead, Geometry Dash, Jets'n'Guns Gold, and My Friend Pedro. We matched them by the tags players give Jets'n'Guns 2 on Steam (Action, Indie, Shoot 'Em Up, Side Scroller, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Hotline Miami
Shared: Action · Great Soundtrack · Indie

Cuphead
Shared: Great Soundtrack · Indie · Difficult

Geometry Dash
Shared: Great Soundtrack · 2D · Difficult

Jets'n'Guns Gold
Shared: Shoot 'Em Up · Action · Great Soundtrack

My Friend Pedro
Shared: Action · Indie · Great Soundtrack

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

Hotline Miami 2: Wrong Number
Shared: Great Soundtrack · Action · Indie

LUFTRAUSERS
Shared: Indie · Action · Bullet Hell

ZeroRanger
Shared: Indie · Shoot 'Em Up · Action

Just Shapes & Beats
Shared: Great Soundtrack · Bullet Hell · Indie

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

Katana ZERO
Shared: Action · Great Soundtrack · Indie

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

Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Indie · Great Soundtrack

DEADBOLT
Shared: Indie · Great Soundtrack · Action

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

Hollow Knight
Shared: Great Soundtrack · Indie · 2D

Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Great Soundtrack · Shoot 'Em Up · Bullet Hell

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

Zombotron
Shared: Action · Indie · 2D

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

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

Guns, Gore & Cannoli
Shared: Action · Side Scroller · Shoot 'Em Up

Savant - Ascent
Shared: Action · Indie · Great Soundtrack

