Yes! That's how I spent a lot of my spare time too in adolescence. There was a forum called Kongrehack run by a Swedish guy where game-hacks were shared. Initially we used Cheat Engine to modify select memory locations in games, but the game creators came up with better defences to obscure the easy hacks.

Somebody created an entire browser - called something like Niflheim but I can't remember the exact name - designed for the purpose of cheating Kongregate APIs. Finally, a subversive guy found a way to submit directly to the "I have won a badge API" and wrote a program to submit all the badges in batch. This took the fun out of winning achievements in games, but introduced many of us to the world of coding, automation, and hacking. Why grind for hours when you can cheat the scoreboard in seconds?

I also developed a way to cheat on Kongai, which was one of my favourite games on Kongregate. However I got bored and moved onto other things in life shortly after. If you were active in this community around 2008, we probably talked to each other back then.