Pokemon Battle Theater ROM

Features

• 120 trainers across Kanto, Johto, Hoenn, Sinnoh, Unova, Kalos, Alola, Galar, Hisui + PWT + anime World Champion Ash
• 9 Legends Arceus trainers — Volo, Adaman, Irida, Ingo, Akari, Kamado, Zisu, Beni, Rei
• Tournament mode, 8 trainer single-elim brackets per region
• Best of N match format with adaptive picks between rounds
• VGC mode, forced doubles, Lv 50 cap, 4 pick of 6
• Team preview AI, scores each mon against the opponent’s whole roster and picks the optimal lineup (one of the coolest additions)
• Custom Trainer slots, full PKHeX style editor in-ROM (sprite / name / species / item / ability / EVs / IVs / moves / nature / gender / shiny) saved to your file
• Pilot Mode, control the player AI’s loaner team yourself
• Level cap (off / 50 / 75 / 100) for fair matchups
• Z-Moves / Mega / Dynamax / Gigantamax, AI bias tuned to fire signature attacks eagerly
• Custom Battle Theater background by LiYun
• Affection + Terastallization disabled for cleaner sim

Known Bugs

• Player trainer name sometimes renders with glitched / corrupted characters in battle dialogue.
• Trainer picker menu occasionally shows funky text on certain entries when scrolling. Closing and reopening the picker normalises it.

Changelog

V2.9.0

• Gym Leaders, the Elite Four and Champions each get a different tier of battle AI, matched to their role in the games.
• Rivals play at Elite Four level (Nemona and Hop at Champion). Villain bosses, Frontier Brains, Battle Tree and Subway bosses, the Legends casts, anime and VGC teams, and custom trainers all play at Champion level. Omniscient AI — which let the AI see hidden sets and made odd plays — is gone.
• Canon Tiers or Equalized — Equalized puts both sides at Champion level so matches come down to the teams. It’s saved, and appears in Run Simulation, the E4 Challenge / Boss Battles level-cap step, and at the start of a tournament.

V2.8.2

AI

• OHKO moves are weighed by their real odds. The AI treated Fissure, Sheer Cold, Horn Drill and Guillotine as a guaranteed kill — so it spammed them, and panic-switched away from them. It now uses the engine’s actual hit chance, and knows they can’t land on a higher-level target, a Sturdy mon, or a Dynamaxed foe.

Team codes

• Every code fits. In-ROM entry now takes up to 34 characters.
• Failed imports say why instead of doing nothing.
• Encoder accepts bulleted move lines (•, *) pasted from notes apps, and warns when a mon came through with no moves.

Data

• Partner Pikachu has its real Let’s Go base stats.
• Gengar’s ability list corrected.

V2.8.1

• 28 of the 32 Legends: Z-A Mega Evolutions had never been given their actual abilities — each was silently inheriting its base form’s. Mega Clefable had Cute Charm instead of Magic Bounce. Mega Starmie had Illuminate instead of Huge Power. Mega Greninja had Torrent instead of Protean.
• All 32 now carry their canon ability, verified against The Pokémon Company’s own announcement and cross-checked on Bulbapedia and Serebii — including the three Z Megas:
• Mega Absol Z — Sharpness (Dark/Ghost, +50% to slicing moves)
• Mega Garchomp Z — Levitate (pure Dragon, so it both sheds the Ground weakness and gains Ground immunity)
• Mega Lucario Z — Aura Guard

Useful Links

Reddit

Github