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Glitch fish: Difference between revisions
→In Generation II
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==In Generation II==
{{GSC}} changed the way Rods originally worked in {{RBY}}. Old Rod and Good Rod encounters now vary based on the current map as well, in addition to the Super Rod; and even the Old Rod (still typically bringing up Magikarp) may fail with the message that there is not even a nibble. Furthermore, due to different coding/data structures, it is also possible to bring up glitch hooked Pokémon encounters (including both Pokémon and glitch Pokémon such as [[?????]]) when fishing from invalid maps using Rods (as there own glitch locations rather than Glitch Cities of valid maps) without having to use a Game Genie to temporarily patch the ROM. The hooked Pokémon (being invalid) can exceed Level 100, do not naturally have to be Pokémon that appear in the water, and in the case of ????? can have a status condition after the battle starts. Maps in Gold/Silver/Crystal each have a fish group, but fish groups beyond the last valid index number will result in invalid hooked Pokémon.
The player technically doesn't have to warp to or otherwise visit a glitch map to access the glitch fish specific to that map (altering wMapGroup DA00 and wMapNumber DA01 such as with a method of [[arbitrary code execution]] like the [[Coin Case glitch]] to partially change the current map without loading the rest of its data is enough.) This method can be ideal for avoiding a [[game freeze]], as many (most?) glitch maps in Gold/Silver/Crystal will typically freeze the game when visited using a door.
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