Been a while since ive reopened the file, my guess is that i used a single int variable to store it and you managed to reach overflow for the number, it would be pretty cool If you could manage that legit but that would be a lot of playing since you would need to reach 2^31+1 money in it for that to happen. If I ever remake this or do a similar game I'll make sure to remember this and use proper storages like a .txt file with the value or a set of ints; probably 3 or 4 and use bitwise operators to utilize this to make it hold up to 2^127 which is a huge number. But I've been looking for some help on a new project I'm working on, game testers would come later but you can be of some help with your game hacker, if you want to help with an engine I'm programming email me : Skagongamer@gmail.com
(Also asset makers or other programmers could be help if you make music or digital pixel art)
Still early development so if you join don't expect much, I've basically managed to draw a triangle on the screen but I would like to make it secure so I'd like to see if publicly available hack software would be stumped by my lack of base software since I'm just using opengl and c program files.