Games like Project G
Games like Project G include Jets'n'Guns 2, Guns, Gore & Cannoli, Blazing Chrome, Huntdown, and DRAINUS. We matched them by the tags players give Project G on Steam (Indie, Shoot 'Em Up, and Side Scroller): closest matches first, and among equally close ones the better-known games.

Jets'n'Guns 2
Shared: Indie · Shoot 'Em Up · Side Scroller

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

Blazing Chrome
Shared: Indie · Side Scroller · Shoot 'Em Up

Huntdown
Shared: Side Scroller · Shoot 'Em Up · Indie

DRAINUS
Shared: Shoot 'Em Up · Indie · Side Scroller

Sine Mora
Shared: Indie · Shoot 'Em Up · Side Scroller

Hitler is my crush
Shared: Side Scroller · Shoot 'Em Up · Indie

RADical ROACH Remastered
Shared: Indie · Shoot 'Em Up · Side Scroller

Skul: The Hero Slayer
Shared: Indie · Side Scroller

Intrusion 2
Shared: Indie · Side Scroller · Shoot 'Em Up

My Friend Pedro
Shared: Indie · Side Scroller

Zombotron
Shared: Indie · Shoot 'Em Up · Side Scroller

ZeroRanger
Shared: Indie · Shoot 'Em Up

ICEY
Shared: Side Scroller · Indie

Syder Arcade
Shared: Indie · Shoot 'Em Up · Side Scroller

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

Streets of Rage 4
Shared: Indie · Side Scroller

Knightmare Tower
Shared: Side Scroller · Shoot 'Em Up · Indie

Valfaris
Shared: Indie · Side Scroller · Shoot 'Em Up

Cyberhunt
Shared: Indie · Shoot 'Em Up

LIMBO
Shared: Indie · Side Scroller

REVOLVER360 RE:ACTOR
Shared: Shoot 'Em Up · Indie · Side Scroller

Kero Blaster
Shared: Side Scroller · Shoot 'Em Up · Indie

SATAZIUS
Shared: Shoot 'Em Up · Indie · Side Scroller