This is the basic tutorial on exact value memory editing. Scan and edit exact numbers or any data type and Speedhacks.
Full tutorial with videos: https://hackerbot.net/tutorials/111-how-to-hack-cheat-games-memory-edit
Fuzzy Search, De-Encryption and more info can be found there.
Download game hacking tools: https://cheatware.net/
Memory editing tools can be made for any gaming platform, but are currently most popular on PC, Android, iOS and Mac. Any game can be hacked and every game can be hacked, but not every kind of cheat is possible in every kind of game. Especially server-sided online games are limited.