There are 2 repositories under shoot-em-up topic.
A space shooter game made with Amethyst and Rust.
Classic bi-plane shoot-'em up
Remake of the space shooter game Retaliate for the Commodore 64
A classic inspired shoot em' up game written in Java with JavaFX and FXGL.
Powermanga is a shoot 'em up with 60 different enemies, 40 meteors, numerous weapons, many end of level baddies, spaceship power-ups and lots of other surprises.
Vortexion is a MSX/SG-1000 inspired shoot-em-up written in Python and uses the Pyxel game engine.
Old-school scrolling shoot 'em up game for Android
Port of Friking Shark (remake of Flying Shark) on the OpenPandora, Odroid and most Linux. Also with AmigaOS4 support. Status: Working (using gl4es).
An efficient bullet hell library made for Gamemaker Studio 2.3.0.
Space Collider files
They don't make light guns that work with LCD screens, so I wrote this to emulate the old arcade light guns with a modern PC. -- Uses Arduino pro micro, a gyroscope, an accelerometer, some geometry and physics math.
This is a Sega Master System clone of an Atari 2600 game named Turmoil. I had originally made the first, unfinished, version for SMS Power's 2012 competition, then now, four years later, I decided to resume development on this for the 2016 competition.
Fun and casual top-down, roguelike shoot 'em up browsergame with shadow elements and colorful neon effects
A dragon themed shoot-em-up for the Sega Master System. Originally made for the SHMUP JAM 1
Vertical scrolling shoot 'em up in the browser, using the zCanvas rendering lib. This is intended as a "bullet hell" game and is aimed more to showcase how to use zCanvas for game development.
Defend the Earth files
The source code for HEXES, A puzzle shoot'em up!
:video_game: An old 2D "Shoot 'Em Up" Sci-fi
A top-down action game made with Bitty Engine.
An open source shmup game made in Löve2D. A Continuation of my abandoned TIC-80 project.
A Shoot 'Em Up base game made in Python-pygame from scratch
A Christmas-Themed SHMUP for the Sega Master System; made for the "Jame Gam Christmas Edition"
Rouge-like top down shoot 'em up made in Godot
✈ ➥ Stellar Duelist is a Shoot-Em-Up game, written in C# using the MonoGame framework.