Cheat engine
Cheat Engine is a popular open-source memory scanner/hex editor tool designed primarily for modifying single-player games. First released in 2003, it allows users to search and modify values stored in computer memory during gameplay. Key features include memory scanning to locate specific values, speed hacks to adjust game speed, dissemblers for code analysis, debugger capabilities, and a user-friendly scripting engine that supports automation. The tool can scan for exact values, unknown values, or changed/unchanged values to help identify and modify game variables like health, ammo, or currency. While primarily used for cheating in games, Cheat Engine also serves educational purposes by helping users understand memory manipulation and reverse engineering concepts. However, its use is generally restricted to offline single-player games, as using it in online games typically violates terms of service and can result in account bans.