Death Track (PC)
Start a season then quit to DOS. Use a hex editor such as Norton diskedit, and edit the RCT file you just saved. Goto Offset 18 Hex 12, and type FF FF FF. This will give you an ungodly sum of money. You can, if you so desire, append one or two more FF's, for an even more ungodly sum of money, but this can also make the game a bit buggy. Besides, it's not as if you need THAT much cash.