BGLSG glitch
The BGLSG Glitch is a sub-glitch of the Pikachu off-screen glitch and occur in Pokémon Yellow, documented by LanceAndMissingNo. in 2017.
Effects
This glitch has various effects. The bug is activated with a disturbing of the movement of the player. Every move they makes, his sprite changes to letters. And, when they walks, the screen moves abruptly, like if the player will be moving in photos. As a curiosity, the NPCs of around will be frozen, looking south.
If the player go into a building, the sprites will change. For example, the Chansey's sprite of Celadon City will change to the Gary's sprite. The walking effects will disappear.
As a fact, if the player walks into a building or a cave, Pikachu will stay in the door. The only way to get it moving is talking to him, or there are other strange effect that makes Pikachu run along the screen until be placed behind the player. But this effect only occur when the player is close to Pikachu (Pikachu appears in the screen). Thanks to this effect, we can do the Pikachu off-screen Glitch in indoors places.
YouTube video
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