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Using id's God Mode codes in Descent would reduce your shields and energy levels to 1. The game essentially enables God mode for about a minute for whoever walks into the beam, meaning once the effect's time is up, you'll be vulnerable whether or not you had God mode before you touched the beam. But, in the final boss fight, there is a beam of energy in the middle of the room. Raven Software's Jedi Knight II also has a God Mode accessible through the console. It protected the player from everything but falling damage. Jedi Knight: Dark Forces II and its Expansion Pack Mysteries Of The Sith had a code accessible by the console. Dark Forces had two forms of God Mode: One that gave unlimited shields in the options menu and a full God Mode cheat code by typing LAIMLAME. It has a spray that gives you permanent invincibility to everything apart from Bottomless Pits and drowning. Batman and Robin on the Playstation has a hidden chamber that will give you this. Not to be confused with the webcomic of the same name or the video game of the same name. The God-Mode Sue is a type of character named after this trope. However, the term "godmoding" is viewed a bit more neutrally than "godmodding" and could just as easily refer to when the characters are given a free pass on potential death for whatever reason. Saying that somebody "God Modes" in a tabletop game is to suggest that he/she basically refuses to allow anything that negatively impacts him. The term has also become popular within various role playing communities, where it's sometimes called the similar term " God Modding" (think "modifying" as opposed to "mode" for pronunciation). This is also the origin of why apparently grossly-overpowered characters are known as God-Mode Sue. For example, to say that somebody is using God Mode in a multiplayer game is to suggest that he/she is using a cheat program.
The term has also become popular as shorthand for Nigh-Invulnerability in other contexts, usually in a cynical tone. A spinoff term used in many games is “Buddha mode,” which prevents the player from ever losing their last hit point while the mode is active. Because they can be used in some very complicated games to allow someone to get past an intractable problem, people (customers) expect most games to have some sort of God Mode in order to allow them to play and finish a game they might otherwise consider unwinnable. There are legitimate reasons for having the capability in a game, for playtesters who are trying a particular level and want to stress-test certain parts of a level without having to worry about being killed while testing, and similar such activities. Ever since a small company called id Software started using the key word "GOD" as an invincibility cheat (beginning with Commander Keen), the term God Mode has migrated as a catch-all term for cheat-code based invincibility in video games.