In the original Transport Tycoon (but not OpenTTD), if you would build a tunnel from one end of the map to the other, the amout of money to pay gets so large that it triggers a (signed) integer overflow. So you can start your campaign with billions of dollars!
The original TTD was super stable though. I remember once I was able to crash it by building a very tight loop for a train, that it crashed with its own tail. This was the only time I saw the red font with debugging info.
An impressing feat, considering it was written in assembly.
I don’t understand (or maybe I’m just too used to online sarcasm) are you calling BS on this claim? Or is it actually possible.