I had a Commodore Amiga and a game I played, a lot, was Mayhem, its a multiplayer (2-4) shooter - imagine multiplayer asteroids, with gravity, fuel and shields!
It was ported to the PC in 2002 by devpack who released the code in 2011 on github and google code which is where I picked it up and ported it to the Raspberry Pi.
This is the port, but check out the original Amiga game.
I got some help from the Raspberry Pi forums in getting it to compile then it was case of sorting out a few case sensitive filename bugs (it was original written for Windows!) and tracking down a bug in the original code which was causing a memory access error and segmentation fault.
The code is on github.com/martinohanlon/mayhem-pi.
sudo apt-get install liballegro4.4 liballegro4-dev git clone https://github.com/martinohanlon/mayhem-pi
cd mayhem-pi ./start
Player 1 - z, x, c, v, g
Player 2 - left, right, pad del, pad 0, pad enter
Player 3 - b, n, 'comma', m, l
Player 4 - y, u, o, i, 0
Change level - 1, 2, 3
If you want to modify the game, I've got a couple of things on my list, you can recompile it with.
cd mayhem-pi make