Does anyone know any good guides for tweaking in gen 4 (more specifically hgss)? I can't seem to find anything on yt except for low quality silent showcases for skips and the son of a glitch video by A+start.
Fake Johto/Kanto video HGSS any% (glitched) speedrun guide
Depending on the layout of a section, it may be possible to tweak in such a way so as to load a walkable area (either black or visible) onto a section that does not normally contain walkable surfaces. This allows for a number of shortcuts, such as skipping Tohjo Falls and therefore HM07 (Waterfall) in Pokémon HeartGold and SoulSilver by loading a walkable area onto the section where the ledge on Route 27 would normally be. In sections containing buildings that are blocked off by NPCs, it is possible to enter them by tweaking a Z-axis change, allowing the player to walk under or over the tile the NPC would normally occupy. Three examples of minor shortcuts or sequence breaks using this method include obtaining access to Mystery Gift in Pokémon Diamond, Pearl, and Platinum before the first badge by bypassing the clown blocking the Jubilife TV front door, completing Azalea Gym before Slowpoke Well by bypassing the Team Rocket Grunt in front of the Gym (though this by itself does not allow Slowpoke Well or Rocket Executive Proton to be skipped entirely, since the game does not trigger the Farfetch'd event that gives the player HM01 (Cut) unless Proton has been defeated), and gain access to the Goldenrod Gym early, which is a crucial part in glitched speedruns.
In Pokémon Platinum, HeartGold, and SoulSilver, the void is filled with invisible walls that will trap the player if they go more than a few steps into the void, making it no longer legitimately possible to navigate through its areas, though the void itself is still possible to enter. Currently the only known way to bypass these invisible walls and proceed through the void is with a "walk through walls" cheat code. As a corollary, a "walk through walls" cheat code is the only way to see "Fake Sinnoh" in Platinum, and "Fake Kanto/Johto" at all (in HeartGold and SoulSilver).
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