It reminds me of TTDPatch. It started with minor modifications to Transport Tycoon, but eventually rewrote large parts of the game itself. Summary: http://www.

It reminds me of TTDPatch. It started with minor modifications to Transport Tycoon, but eventually rewrote large parts of the game itself. Summary: http://www.ttdpatch.net/features.html http://www.ttdpatch.net/features.html Details: http://www.ttdpatch.net/Manual/ttdpatch.html#The%20Patches http://www.ttdpatch.net/Manual/ttdpatch.html#The%20Patches