Alien Carnage

Alien Carnage is a side-scrolling shooter in which Halloween Harry straps on a jetpack and flamethrower to clear a city of aliens that are turning its people into zombies. Each level hides hostages to rescue, and the shop between levels sells heavier weapons for the coins you collect.

Apogee published it in 1993 (it was first sold as Halloween Harry), and 3D Realms released the full four-episode game as freeware in 2007.

How to set it up

1. Install DOSBox Staging or another DOS emulator.
2. Unzip the download into a folder of its own.
3. Start DOSBox Staging and type mount c "<folder>\aliencarnage", where <folder> is where you unzipped the download, then c:.
4. Type CARNAGE.EXE to start the game.