This is my sadistic shmup, Nightmare World.
If you want to show off your run, consider uploading a replay. You can change your player name in the settings.
Unfortunately, this demo doesn't have as much in it as I hoped. I wanted to have a longer stage, redo some sprites, and totally replace the sound effects. There's a lot left to do.
Executables are provided for W32 and L64. Linux users may need to install SFML 2.5.1.