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Roaming Pokémon encounter glitch
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Major glitches of the Pokémon series
"Core" glitch Variants and Consequences
Arbitrary code execution see template, remote, cart-swap, unintended ROM code execution
2x2 block encounter glitches Left-facing shore tile glitch (in-game trade shore encounter trick, old man trick, Trade link up shore encounter trick, Fight Safari Zone Pokémon trick)
99 item stack glitch ­
Bad clone glitch ????? party overloading (Type 0xD0 move glitch, ????? map corruption, Celebi trick, Celebi Egg trick, Shiny Celebi trick, glitch move map corruption, overloaded party map corruption, Glitch Unown (Glitch Unown map corruption) Duplicate key items glitch (infinite items and item creation, expanded Balls pocket (TM/HMs outside of the TM/HM pocket, Glitch Pokédex categories))
Berry glitch
Bug-Catching Contest data copy glitch (Japan only)
Ditto DV manipulation
Elite Four door glitch (Japan only)
Expanded party encounter table manipulation
Glitch City Safari Zone exit glitch, RAM manipulation
Glitch meta-map script activation (Generation I)
Infinite Master Balls (Colosseum)
Large storage box byte shift glitch storage box remaining HP glitch, maximum stat glitch
Item duplication glitch
Item stack duplication glitch Generation I expanded items pack (Glitch Rocket HQ maps, Map FE (English and non-English European Yellow), Map script pointer manipulation (arbitrary code execution, map script pointer item ball manipulation), Text pointer manipulation (arbitrary code execution, item ball manipulation, mart buffer overflow), Trainerless instant encounter glitch
Transform held item glitch (Japan only)
Mimic glitch (Japan only)
Out of bounds Glitch City (Generation II) Slowpoke Well out of bounds corruption (French version)
Lumiose City save glitch
Pikachu off-screen glitch Trainer corruption glitch
Pokémon merge glitch
Pomeg glitch Pomeg data corruption glitch
Roaming Pokémon encounter glitch
(Mimic) Transform Rage glitch
Select glitches (Japan only) Closed menu: Dokokashira door glitch (international), Fossil conversion glitch (international), Second type glitch, Skip to Level 100 glitch, Trainer mutation glitch, walk through walls (international) Special menu: Lift glitch, Badge describer glitch)
Sketch glitch
SRAM glitch (Generation I) 255 Pokémon glitch, send party Pokémon to a new game
SRAM glitches (Generation II) Mailbox glitches, Mystery Gift item corruption, Trainer House glitches
Surf down glitch Grass/rock Surfing glitch (Spanish/Italian only) (adaptions: Submerge glitch (international), 8 8 (0x7C) grass/rock surfing glitch (English Red/Blue))
Time Capsule exploit
Trainer escape glitch Death-warp, Mew Trick, Ditto Trick, Experience underflow glitch
Buffer overflow techniques Japanese unterminated name glitch item instant encounter glitch, LOL glitch, Rival LOL glitch, Instant LOL glitch, RAM LOL glitch, oobLG, blockoobLG, Instant encounter infinite chain glitch (LGFly)), Super Glitch (Generation I) (party remaining HP glitch), Super Glitch (Generation III), Text pointer manipulation mart buffer overflow glitch, CoolTrainer♀-type move, Double distort CoolTrainer♀ corruption, Yami Shop glitch
Walk through walls ledge method, museum guy method, Rival's effect, Select glitch method (international), Brock Through Walls
ZZAZZ glitch party Pokémon box data shift glitch

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Bulbapedia also has an article about Roaming Pokémon encounter glitch.
The glitch can be used to obtain both rare Pokémon and Pokémon at Level 100, however this will sacrifice the roaming Pokémon (Latios or Latias).

Not to be confused with the Roaming Pokémon IV glitch and Roaming Pokémon Roar glitch.

The roaming Pokémon encounter glitch, also known as the Battle Tower Lati@s glitch is a major glitch in Pokémon Ruby and Sapphire. It does not work in Pokémon Emerald.

The glitch allows the player to capture Pokémon from a Trainer with at least two Pokémon on their team, including an ordinary Trainer or a Battle Tower Pokémon such as level 100 Linoone, Hariyama, Dustox, etc.

The Pokémon from the Battle Tower can be nicknamed and will not turn into a Bad Egg, but the Pokémon from other Trainers may become Bad Eggs.

However, you can exploit this to spread Pokérus by battling with the Bad Egg in the party, because after the battle ends the Pokérus has a chance to spread (even though the original affected Pokémon was a Bad Egg).


The glitch was reported in Japanese Ruby, but actually works in both US releases of Ruby and Sapphire.

The roaming Pokémon encounter glitch was documented in 2012 in Japanese by an anonymous 2ch user. volty706 mirrored the conversation on their blog, calling it the "wandering glitch" (Japanese: 徘徊バグ).

On August 1, 2014, G- Mizuka uploaded a video showing the glitch in Japanese Pokémon Ruby.

On July 17, 2014, SailorJupiter confirmed that the Latios glitch in fact works for US English Ruby in addition to the Japanese version.


To perform this glitch, the player must lose (or win?) against a Trainer with at least two Pokémon, and then encounter Latios or Latias without encountering another Pokémon in between (very important).

The player should defeat the Latios/Latias, and this will cause a "PkMn Trainer" with a blank name with a team based on the Battle Tower Trainer you lost against to send one of two of their Pokémon (the game thinks that you KOd one of them).

This Pokémon will flee like Latios/Latias, so it is a good idea to use Mean Look or Spider Web against them if you cannot catch one with a Master Ball. If that Pokémon is defeated, the Trainer will send out another one of their Pokémon, which can be captured and can flee like the first Pokémon after Latios/Latias faints.

If the Trainer is defeated, no victory text will appear. The player can gain experience from the Battle Tower Pokémon if a Pokémon participated that is below level 100, and if that Pokémon gains experience, the wild Pokémon victory music may play and stick, even if the battle hasn't ended yet.

The origin of a Pokémon obtained from a Battle Tower Trainer is stated to be "BATTLE TOWER (met)".

Other credits

  • ChickasaurusGL (article text, with permission)

YouTube videos

YouTube video by ChickasaurusGL
YouTube video by G-Mizuka