Cheat Engine, an infamous exploiting program created by Eric Heijnen ("Dark Byte") for the Windows operating system, is an open source memory scanner, hex editor, and debugger primarily used for cheating in computer games. It searches for values input by the user with a wide variety of options that allow the user to find and sort through the computer's memory.
Within ROBLOX, Cheat Engine is the most noted way of exposing and taking advantage of game vulnerabilities. Some of the common exploits include "speed hacking", memory editing, and dynamic-link library (DLL) injections.
Speed hacking consists of making the ROBLOX client run faster. The end result causes the user to move at a faster speed. Within the game, the hack has minimal advantages other than to annoy other users.
Memory editing searches through the game's memory and gives the exploiter the opportunity to change the game's values. The damage can vary from changing the dynamic lighting of a place to inserting mature assets into the game.
Dynamic-link library injections injects DLL files into the ROBLOX software and allows the exloiter to manipulate its code.
Most exploits used by Cheat Engine are shortly patched by the ROBLOX administrators.