Cheat engine

Cheat Engine is an open source tool designed to help you with modifying single player games running under window so you can make them harder or easier depending on your preference(e.g: Find that 100hp is too easy, try playing a game with a max of 1 HP), but also contains other usefull tools to help debugging games and even normal applications, and helps you protect your system by letting you inspect memory modifications by backdoors and even contains some ways to unhide them from conventional means.

It comes with a memory scanner to quickly scan for variables used within a game and allow you to change them, but it also comes with a debugger, disassembler, assembler, speedhack, trainer maker, direct 3D manipulation tools, system inspection tools and more.

Besides these tools it also comes with extensive scripting support which will allow experienced developers to create their own applications with easy and share them with other people

For new users it is recommended to go through the tutorial(The one that comes with Cheat Engine, you can find it in your programs list after installing) and at least reach step 5 for basic understanding of the usage of Cheat Engine

If you need help on Cheat Engine , you can always contact me at dark_byte@hotmail.com , msn supported as well(don't ask about online games, I don't know anything about that) Or on irc: server: irc.p2p-network.net channel: #cef (Web-based irc)

Note: It will most likely not work on online games, so don't bother asking me that Local Cheat Engine WIKI

Note that since cheat engine is open source, everyone is welcome to contribute to the project. Contact dark_byte@hotmail.com for more information about helping.