Challenge run · Original GBC · Not HGSS
Monotype run planner
Lock one type and plan a full Gold or Silver challenge. Filter pure vs dual-type options, hide trade-locked mons, build a six, and preview which Johto and Kanto gym specialties fight back. Availability and earliest locations match this site’s Gold/Silver Pokédex and live map pins.
Fast answers
How monotype works here
Pick a type, keep any species that has that type, and fill six slots. Pure-only and no-trade toggles raise the difficulty. HM slaves can sit outside the battle six if your house rules allow it—pair this page with the HM slave guide.
Interactive tool
Build your monotype six
Standard monotype: a species counts if either of its types matches. Locations use earliest Johto-first wild/gift rows from the Gold/Silver Pokédex dataset. Click a card to add or remove it from the party.
Pool
Eligible species
Gyms & badges
Where this monotype struggles
Rough STAB-only read using Gen 2 type chart multipliers against each gym specialty. Dual coverage moves on your party can fix many “hard” walls—open the gym guide for levels and counters.
House rules
Suggested monotype rules for Gold & Silver
Standard monotype
- Battle party species must include the chosen type.
- Dual-types are allowed (Gyarados for Water, Scizor for Bug or Steel).
- HM slaves may travel outside the battle six if your rules allow.
- Version exclusives and Day Care eggs are fair game on the cart you chose.
Hard mode options
- Pure only — single-type species only (Ice/Flying/Steel become brutal).
- No trade — hide trade evolutions and Time Capsule imports.
- No legendaries — skip Ho-Oh, Lugia, beasts, and transfers.
- Nuzlocke hybrid — first eligible encounter per route only.
HMs without breaking the theme
Cut, Surf, Strength, Whirlpool, and Waterfall gate the main story. Fly is optional fast travel, not a progression requirement. Either teach required HMs to on-type mons, or keep a non-battle HM mule. Water monotypes usually handle Surf/Waterfall naturally; Fire and Electric need a plan.
Progress path
Follow the main Johto walkthrough, then Kanto badges, then Mt. Silver. Use the week calendar for Lapras (Water) and Bug Contest picks. Friendship evolutions (Golbat → Crobat, Eevee → Umbreon/Espeon) still need time-of-day and happiness care.
Type notes
Hard types and strong openers
Water
Deepest pool. Totodile line, Gyarados, Lapras (Friday Union Cave), Quagsire, Tentacruel, and Kingdra (trade) cover Surf and most gyms. Whitney still hurts without Fighting coverage.
Fire
Cyndaquil line carries early game. Growlithe is Gold-only; Vulpix is Silver-only. Magmar, Houndoom, and Arcanine (stone) fill mid/late. Surf remains an HM problem.
Electric
Mareep → Ampharos is the star. Magnemite (Steel dual), Lanturn, and the roaming Raikou after Burned Tower in either version also help. Ground matchups and Clair’s dragons demand coverage items or dual-types.
Bug
Heracross (Headbutt), Scyther/Scizor, Butterfree/Beedrill early, and Pinsir in both versions’ Bug-Catching Contest provide the core pool. Bug Contest and Headbutt trees matter—open those tools.
Steel
No pure Steel species exists in Gen II. Use dual-types such as Steelix, Scizor, Skarmory, Magneton, and Forretress; later-generation options such as Mawile are outside original Gold/Silver. Several of the available choices need a trade or evolution item.
Dark
Umbreon (friendship + night), Houndour line (both versions, Route 7), Murkrow (night), Sneasel, and Tyranitar (Larvitar evolution). Thin early pool—plan friendship and night routes.
Ice / Flying / Ghost
Ice and Flying lean on dual-types only for pure-rule runners. Ghost is mostly the Gastly line plus Misdreavus, which appears at night in Silver Cave in both versions. Use pure-only off unless you want a brutal challenge.
Dragon
Dratini from Dragon’s Den / Game Corner path into Dragonite. Kingdra needs Dragon Scale trade. Small pool, huge late power—pair with Clair and Lance guides.
Run setup
Monotype prep checklist
Checks save in this browser (localStorage). Pair with Run Progress for badge tracking.
FAQ
Monotype questions
What is a monotype run in Pokemon Gold and Silver?
You only battle with Pokemon that share one chosen type. Dual-types usually count. Completing Johto gyms, the Elite Four, Kanto, and Red with that rule is the full challenge.
Can I finish every monotype without trading?
Not comfortably. Trade evolutions (Scizor, Steelix, Kingdra, Slowking, Politoed) and Time Capsule imports are locked behind links. Use Hide trade-required to see an honest single-cart pool.
Why are Ice and Flying pools so small?
Gen 2 has no pure Flying species and no pure Ice species. You must use dual-types (Gyarados, Piloswine, Jynx, Cloyster, Skarmory, and so on) unless you abandon pure-only rules.
How do I handle HMs?
Prefer on-type learners when they exist. Otherwise keep a non-battling HM slave—common house rule. The HM slave tool lists multi-HM learners.
Is this the same as a monotype Nuzlocke?
You can combine them: only catch the first route encounter if it matches your type (or skip the route). Use the Nuzlocke encounter tracker alongside this planner.
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