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What Polished Crystal changes
Every stat, type and ability this hack alters, next to what the official games do. Measured from the guide's own data, so it can't drift from the pages it links to.
Compared against present-day official data. The Fairy type and hidden abilities arrived after Pokémon Crystal, so a difference here can belong to the series rather than to this hack.
Evolution methods for all 127 species →
Base stat changes (60)
| Pokémon | What changed | Total | |
|---|---|---|---|
 | Charizard | Attack 84→94, Sp. Atk 109→99 | 534→534 |
 | Butterfree | Sp. Atk 90→110, Sp. Def 80→110, Speed 70→80 | 395→455 |
 | Beedrill | Attack 90→100, Sp. Def 80→90, Speed 75→115 | 395→455 |
 | Pidgeot | HP 83→93, Sp. Atk 70→90, Speed 101→102 | 479→510 |
 | Raticate | HP 55→65, Attack 81→91, Speed 97→107 | 413→443 |
 | Fearow | HP 65→75, Attack 90→99, Sp. Atk 61→66, Sp. Def 61→66, Speed 100→101 | 442→472 |
 | Pikachu | Attack 55→65, Sp. Atk 50→60, Speed 90→95 | 320→345 |
 | Raichu | Attack 90→100, Sp. Atk 90→100, Speed 110→121 | 485→516 |
 | Wigglytuff | HP 140→148, Defense 45→55, Sp. Def 50→65 | 435→468 |
 | Vileplume | Sp. Atk 110→120, Sp. Def 90→100 | 490→510 |
 | Parasect | Attack 95→115, Defense 80→100 | 405→445 |
 | Venomoth | Sp. Atk 90→115 | 450→475 |
 | Poliwrath | Defense 95→100 | 510→515 |
 | Victreebel | Attack 105→115, Sp. Atk 100→110 | 490→510 |
 | Slowbro | Defense 110→120 | 490→500 |
 | Dewgong | Sp. Atk 70→80 | 475→485 |
 | Onix | Attack 45→80 | 385→420 |
 | Marowak | Speed 45→70 | 425→450 |
 | Rhydon | HP 105→110, Sp. Def 45→50 | 485→495 |
 | Seaking | Attack 92→102, Speed 68→88 | 450→480 |
 | Jynx | HP 65→70, Attack 50→60, Defense 35→40, Sp. Atk 115→120, Sp. Def 95→100 | 455→485 |
 | Electabuzz | Attack 83→88 | 490→495 |
 | Ditto | HP 48→78, Attack 48→28, Sp. Atk 48→28, Speed 48→108 | 288→338 |
 | Furret | Attack 76→86, Speed 90→108 | 415→443 |
 | Noctowl | Sp. Atk 86→96 | 452→462 |
 | Ledyba | Attack 20→40, Sp. Atk 40→20 | 265→265 |
 | Ledian | Attack 35→95, Sp. Atk 55→35 | 390→430 |
 | Ariados | Speed 40→80 | 400→440 |
 | Lanturn | Sp. Atk 76→86, Sp. Def 76→86 | 460→480 |
 | Xatu | Sp. Atk 95→100, Speed 95→100 | 470→480 |
 | Flaaffy | Attack 55→60, Defense 55→60, Sp. Atk 80→85, Sp. Def 60→65, Speed 45→50 | 365→390 |
 | Ampharos | HP 90→95, Defense 85→90, Sp. Atk 115→125, Sp. Def 90→95, Speed 55→65 | 510→545 |
 | Bellossom | Sp. Atk 90→100, Sp. Def 100→110 | 490→510 |
 | Azumarill | Sp. Atk 60→90 | 420→450 |
 | Sudowoodo | HP 70→75, Attack 100→115, Defense 115→130, Sp. Def 65→80 | 410→460 |
 | Politoed | Defense 75→80, Speed 70→80 | 500→515 |
 | Skiploom | HP 55→65 | 340→350 |
 | Jumpluff | HP 75→95 | 460→480 |
 | Aipom | Speed 85→80 | 360→355 |
 | Sunflora | Attack 75→55, Defense 55→75, Speed 30→85 | 425→480 |
 | Quagsire | Attack 85→95, Defense 85→95 | 430→450 |
 | Slowking | Sp. Def 110→120 | 490→500 |
 | Girafarig | Sp. Atk 90→100, Speed 85→95 | 455→475 |
 | Steelix | Attack 85→90 | 510→515 |
 | Magcargo | Defense 120→135, Sp. Atk 90→115, Sp. Def 80→115 | 430→505 |
 | Delibird | HP 45→55, Attack 55→85, Defense 45→55, Sp. Atk 65→95, Sp. Def 45→55, Speed 75→105 | 330→450 |
 | Skarmory | HP 65→85 | 465→485 |
 | Stantler | Attack 95→100 | 465→470 |
 | Smeargle | Speed 75→100 | 250→275 |
 | Elekid | HP 45→50, Speed 95→100 | 360→370 |
 | Magby | HP 45→50 | 365→370 |
 | Mismagius | Sp. Atk 105→110, Sp. Def 105→110, Speed 105→110 | 495→510 |
 | Honchkrow | HP 100→105 | 505→510 |
 | Munchlax | Defense 40→45 | 390→395 |
 | Rhyperior | HP 115→120, Sp. Def 55→60 | 535→545 |
 | Electivire | Speed 95→105 | 540→550 |
 | Magmortar | Speed 83→93 | 540→550 |
 | Kleavor | Attack 135→130, Sp. Def 70→75 | 500→500 |
 | Farigiraf | Sp. Atk 110→120, Speed 60→70 | 520→540 |
 | Clodsire | Attack 75→85, Defense 60→70 | 430→450 |
Type changes (31)
| Pokémon | Was | Now | |
|---|---|---|---|
| Charizard | Fire / Flying | FireDragon |
 | Blastoise | Water | WaterSteel |
| Butterfree | Bug / Flying | BugPsychic |
 | Ninetales | Fire | FireGhost |
 | Golduck | Water | WaterPsychic |
 | Rapidash | Fire | FireFairy |
 | Meganium | Grass | GrassFairy |
 | Typhlosion | Fire | FireGround |
 | Feraligatr | Water | WaterDark |
| Noctowl | Normal / Flying | GhostFlying |
| Ledian | Bug / Flying | BugFighting |
| Ariados | Bug / Poison | BugDark |
| Ampharos | Electric | ElectricDragon |
| Bellossom | Grass | GrassFairy |
| Politoed | Water | WaterGrass |
| Sunflora | Grass | GrassFire |
| Girafarig | Normal / Psychic | PsychicDark |
 | Dunsparce | Normal | NormalGround |
 | Octillery | Water | WaterFire |
| Stantler | Normal | NormalPsychic |
 | Lugia | Psychic / Flying | WaterFlying |
 | Celebi | Psychic / Grass | GrassFairy |
| Mismagius | Ghost | GhostFairy |
| Rhyperior | Ground / Rock | SteelRock |
| Electivire | Electric | ElectricFighting |
| Magmortar | Fire | FireFighting |
 | Yanmega | Bug / Flying | BugDragon |
 | Cursola | Ghost | GhostRock |
 | Sneasler | Fighting / Poison | PoisonFighting |
 | Dudunsparce | Normal | NormalDragon |
| Farigiraf | Normal / Psychic | PsychicDark |
Ability changes (88)
| Pokémon | Gains | Loses | |
|---|---|---|---|
 | Bulbasaur | Effect Spore | — |
 | Ivysaur | Effect Spore | — |
 | Venusaur | Thick Fat | — |
 | Charmander | Flame Body | — |
 | Charmeleon | Flame Body | — |
| Charizard | Tough Claws | — |
 | Squirtle | Shell Armor | — |
 | Wartortle | Shell Armor | — |
| Blastoise | Mega Launcher | — |
| Butterfree | Levitate | — |
| Beedrill | Adaptability | — |
| Pidgeot | No Guard | Big Pecks |
 | Clefairy | — | Friend Guard |
 | Vulpix | Forewarn | — |
| Ninetales | Forewarn | — |
 | Jigglypuff | Soundproof | Friend Guard |
| Wigglytuff | Soundproof | Frisk |
 | Zubat | Anticipation | — |
 | Golbat | Anticipation | — |
 | Primeape | Gorilla Tactics | Vital Spirit |
 | Abra | Trace | Inner Focus |
 | Kadabra | Trace | Inner Focus |
 | Alakazam | Trace | Inner Focus |
 | Magnemite | Levitate | Sturdy |
 | Magneton | Levitate | Sturdy |
 | Gengar | Levitate, Shadow Tag | — |
 | Cubone | Cursed Body | Lightning Rod |
 | Rhyhorn | Solid Rock | Lightning Rod |
| Rhydon | Solid Rock | Lightning Rod |
 | Chansey | — | Healer |
 | Kangaskhan | Parental Bond | Inner Focus |
| Jynx | Filter | Forewarn |
 | Gyarados | Mold Breaker | — |
 | Vaporeon | Drizzle | — |
 | Jolteon | Static | — |
 | Flareon | Drought | — |
 | Aerodactyl | Tough Claws | Pressure |
 | Articuno | Snow Warning | — |
 | Zapdos | Drizzle | — |
 | Moltres | Drought | — |
 | Dragonite | Marvel Scale | — |
 | Mewtwo | Insomnia | — |
 | Mew | Magic Guard | — |
 | Chikorita | Natural Cure | — |
 | Bayleef | Natural Cure | — |
| Meganium | Natural Cure | — |
 | Cyndaquil | Flame Body | — |
 | Quilava | Flame Body | — |
| Typhlosion | Flame Body | — |
 | Totodile | Guts | — |
 | Croconaw | Guts | — |
| Feraligatr | Intimidate | — |
 | Crobat | Anticipation | — |
 | Cleffa | — | Friend Guard |
 | Igglybuff | Soundproof | Friend Guard |
 | Mareep | Motor Drive | Plus |
| Flaaffy | Motor Drive | Plus |
| Ampharos | Mold Breaker | Plus |
| Bellossom | Own Tempo | Healer |
 | Espeon | Magic Guard | — |
 | Umbreon | Magic Guard | — |
 | Wobbuffet | — | Telepathy |
| Dunsparce | Sand Stream | Rattled |
| Steelix | Sand Force | Rock Head |
 | Shuckle | Solid Rock | Sturdy |
 | Heracross | Skill Link | Swarm |
 | Houndoom | Solar Power | Unnerve |
 | Smoochum | Filter | Forewarn |
 | Blissey | — | Healer |
 | Raikou | Volt Absorb | — |
 | Entei | Flash Fire | — |
 | Suicune | Water Absorb | — |
 | Larvitar | Battle Armor | — |
 | Pupitar | Battle Armor | — |
 | Tyranitar | Battle Armor | — |
| Lugia | Drizzle | — |
 | Ho-Oh | Drought | — |
| Celebi | Magic Guard | — |
 | Wynaut | — | Telepathy |
 | Happiny | — | Friend Guard |
 | Weavile | Technician | — |
 | Magnezone | Levitate | Sturdy |
| Yanmega | Levitate | Frisk |
 | Leafeon | Natural Cure | — |
 | Glaceon | Snow Warning | — |
 | Sylveon | Serene Grace | — |
| Sneasler | Technician | Pressure |
 | Annihilape | Gorilla Tactics | Vital Spirit |