Basic Trope: A bug-ridden, sometimes impossible level, normally only accessible by hacking or glitches.
- Straight: The platformer game Super Troper Bros. normally has eight worlds with four levels each; however, it's possible using glitches to end up in World 9, which contain copies of previous levels with messed up palettes and enemy placements.
- Exaggerated:
- Not only that, your character turns into a random enemy, coins suddenly start deducting from your coin counter, the level is impossible to complete, and it can even potentially brick your console.
- There are well over 255 possible worlds.
- Downplayed:
- World 9 is simply a copy of World 1, but with "9" displaying at the top of the screen; nothing special.
- World 9 has a fair amount of bugs, but they don't have an effect on actually playing it that much. They mostly fall under Good Bad Bugs territory.
- Justified:
- The game is reading either garbage data, or looping back around to the beginning of the level index.
- The plot of Super Troper Bros. involves Reality Is Out to Lunch as a story beat, and a Minus World is a perfect fit.
- Inverted: All the proper worlds are bug-ridden, yet World 9 isn't (for some twisted reason).
- Subverted:
- World 9 seems like it would be a buggy mess, however it is just a copy of World 1.
- World 9 looks visually glitchy but everything is rendered exactly as it was designed to be and is bug-free despite bizarre appearances.
- Double Subverted: World 10, on the other hand...
- Parodied: The player dies right at the beginning due to an enemy spawning on them.
- Zig-Zagged: Super Troper Bros. has several invalid level IDs after the used ones; some of them results in Minus Worlds, while others just crash the game.
- Averted: There is no unused levels.
- Enforced:
- World 9 was originally meant to be a Brutal Bonus Level, only playable once reaching 100% Completion, however it got Dummied Out late into development; the layout was deleted, however the object layout remain in the game's data.
- World 9 plays a functional technical role, such as being where corpses which fade away get teleported to, in order to avoid dynamic memory allocation issues. It is simplest to make it a map that the player is never intended to reach.
- Lampshaded: "World 9: How Did You Get Here?"
- Invoked: "Let's mess with the players by suggesting there's a World 9!"
- Exploited: An NPC makes mention of a "mystical ninth world" and gives you a list of instructions on how to access it; he was lying.
- Defied: A Nonstandard Game Over of the player being abducted by an Eldritch Abomination plays whenever the player would otherwise enter a non-intended map.
- Discussed: "You know, I don't think we're meant to be here."
- Conversed: ???
- Implied: World 0 is Dummied Out and may be accessed and its conditions are heavily dependent upon the state of other areas in the game world.
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