This great action game supports the "Classical Games 4-Player Interface", which you can buy online for little money, or you can even build one by yourself. More information about this device can be found here.
This game is freeware - copy it to all your friends and play it at every C64 gaming party!
However, if you enjoy playing it, you are very welcome to donate or buy me a beer if you meet me somewhere in real-life ;)
Or, if you would like to have something nice for your collection, have a look at the Boxed Version!
Note: This is a game for the Commodore C64 home computer. If you have no C64 or if you have no possibility to transfer .PRG or .D64 files to a real C64, you can use an Emulator like VICE to play it on your PC/Mac or similar (VICE actually supports 4 joysticks, btw).
If you would like to have a physical copy of the game on 5.25" disk and with a printed manual etc, send a mail to email@example.com. The price of the Boxed Version is 16.90 EUR, shipping is 2.90 for Germany or 3.90 international (for 1-2 copies, if you would like to have more, just tell me and we will work something out).
The Boxed Version contains:
Here are some nice pics of the Boxed Version: