Pokémon Generations and the National Pokédex

The nine National Pokédex groups

Generation I covers #0001–#0151, the original 151 species. Generation II adds 100, Generation III adds 135, Generation IV adds 107, and Generation V adds 156—the largest single group in ShadowDex.

Generation VI adds 72, Generation VII adds 88, Generation VIII adds 96, and Generation IX adds 120 through #1025. These counts describe new National Pokédex species, not regional forms, alternate forms, Mega Evolutions, or every battle transformation.

• Generation I: 151 species
• Generation II: 100 species
• Generation III: 135 species
• Generation IV: 107 species
• Generation V: 156 species
• Generation VI: 72 species
• Generation VII: 88 species
• Generation VIII: 96 species
• Generation IX: 120 species

Worked boundary check: Mew, Chikorita, Meltan, and Grookey

ShadowDex assigns generations using National Pokédex number ranges. Mew is #151, the last number in its Generation I pool; Chikorita is #152, the first in Generation II. Celebi at #251 and Treecko at #252 show the next boundary. Use the number, not a guess about which starter or mascot “feels” like a generation.

A less obvious check is Meltan #808 and Melmetal #809: both fall in ShadowDex’s Generation VII range, which ends at #809. Grookey #810 starts its Generation VIII range. The grouping rule also puts Wyrdeer #899 in Generation VIII and Sprigatito #906 in Generation IX.

Exercise: would #905 and #906 belong in the same generation pool? No. The implemented Generation VIII endpoint is #905, and Generation IX runs from #906 through Pecharunt #1025. These ranges describe this site’s species roster, not every Pokémon obtainable in a particular game.

Why a generation filter can split a familiar family

Pikachu #25 and Raichu #26 belong to ShadowDex’s Generation I pool, while Pichu #172 belongs to Generation II. A generation pool is therefore not a complete evolutionary-family collection. Recognizing that a Pokémon is related to Pikachu does not make it eligible for the same filtered run.

The same principle helps explain why an older-looking design can appear in a later-numbered group. Stantler #234 is in Generation II, while Wyrdeer #899 is in Generation VIII. Filter membership follows the stored National number; visual similarity is not the grouping rule.

For a family-focused study session, compare entries you have already answered in review or keep your own short list. The solo silhouette launcher offers all-species, type, and generation pools, not a custom family selector. In multiplayer, check the host’s generation and type filters before assuming a familiar species can appear.

Species entries, regional forms, and distinct answers

ShadowDex has one quiz record and one artwork file per numbered species. Its Raichu record is #26 with Electric typing, and its Wooper record is #194 with Water/Ground typing. Do not assume the quiz will rotate through their regional appearances or use a different form’s typing just because you remember it from another game.

Clodsire is different in this roster: it has its own record, #980, with Poison/Ground typing. It is a separate possible answer in Generation IX rather than an extra form attached to the Wooper quiz record. A familiar design connection is not enough to decide whether two names share a numbered entry; check the species records.

Nidoran♀ and Nidoran♂ illustrate another important naming edge case: they are separate records, #29 and #32. The typed-answer normalizer accepts the corresponding female or male distinction, including “nidoran-f” and “nidoran-m.” Removing punctuation does not turn the two species into one answer. For other species, type the species name used by the quiz rather than adding an unlisted form label.

A generation filter does not restore an old type chart

Generation I in ShadowDex means the species numbered #1–#151, not a simulation of the original games. For example, the stored Clefairy record is Fairy, and Magnemite is Electric/Steel. Those are the records used by the site even though both species are in its Generation I group.

This matters when switching tasks. A generation-filtered silhouette run tests recognition within a numbered species group. Type Lab tests the modern chart. Neither selection changes the other into a historical battle-rules exercise.

Try this check before making a multiplayer pool: does “Generation I and Steel” necessarily mean no species are eligible? No; Magnemite #81 and Magneton #82 both have Steel in the stored typing and belong to Generation I by number. A narrow intersection can still be too small for the requested rounds or four silhouette choices, so check the lobby’s pool requirements rather than assuming every filter combination will support a match.