Some of those can be pretty fun, but when you get to the point that paying for it seems at all tempting it's time to take a different approach - the way which involves a decompiler, a debugger and maybe Frida too.

When free to play becomes pay to win, writing your own cheats is the more fun and rewarding option.

And that is how you leverage your downtime into something at least tangentially related to productivity. I like it!