Cash Invaders

Cash Invaders is a twist on Space Invaders in which the aliens carry numbers and you have to shoot them in the right order. It is freeware.

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>\invader", where <folder> is where you unzipped the download, then c:.
4. Type invader.exe to start the game.