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Template:Nomenclature -

x is an exploit. Under our rules (add here), it classes as: (Parameters are glitch, bug, unintended exploit, (...), trick of: (parent glitch, etc.))

Ref test

The Sun is pretty big.[1] The Moon, however, is not so big.[2]

Bad top-left block pointer

More research is needed for this article.
Gen III 00FC-0114.png
Reason given: Can occur when using an Xploder cheating device to set these, on both Japanese and English Red. May not count as an error for unmodified game (if a quirk of that). Otherwise game may load a Glitch City as usual without freezing

Bad top-left block pointers occur in at least Pokémon Red and Green for bad top-left block pointers such as 0x0000 and 0xFFFF. This address in RAM is the word at 0xD2DE. After modifying the pointer and opening/closing the Trainer Card, the game may freeze. The cause is currently unknown.


  1. E. Miller, The Sun, (New York: Academic Press, 2005), 23-5.
  2. R. Smith, "Size of the Moon", Scientific American, 46 (April 1978): 44-6.