Pokémon Red & Blue: Just started — no badges

What opens up at this point in the game, and everything you can catch by now that you couldn't before.

Now usable

• Grass
• In-game trade
• Gift
• Poké Flute
• Static encounter
• Gift (with the Dome Fossil)
• Gift (with the Helix Fossil)
• Gift (with the Old Amber)

Newly reachable

Newly catchable (105)

AbraAerodactylArbokArticunoBellsproutBulbasaurCaterpieChanseyCharmanderClefairyCuboneDewgongDiglettDittoDodrioDoduoDrowzeeDugtrioEeveeEkansElectabuzzElectrodeExeggcuteFarfetch’dFearowGastlyGeodudeGloomGolbatGolduckGrimerGrowlitheHaunterHitmonchanHitmonleeHorseaHypnoJigglypuffJynxKabutoKadabraKakunaKangaskhanKinglerKoffingKrabbyLaprasLickitungMachopMagikarpMagmarMagnemiteMagnetonMankeyMarowakMeowthMetapodMewtwoMr. MimeMukNidoran♀Nidoran♂NidorinaNidorinoOddishOmanyteOnixParasParasectPidgeottoPidgeyPikachuPinsirPonytaPorygonPsyduckRaichuRaticateRattataRhydonRhyhornSandshrewSandslashScytherSeadraSeelShellderSlowbroSlowpokeSnorlaxSpearowSquirtleStaryuTangelaTaurosVenomothVenonatVoltorbVulpixWeedleWeepinbellWeezingWigglytuffZapdosZubat

TMs you can now pick up

• TM01 Mega Punch — Mt. Moon — B2F
• TM02 Razor Wind — Rocket Hideout — B4F
• TM03 Swords Dance — Silph Co. — 7F
• TM04 Whirlwind — Route 4
• TM07 Horn Drill — Rocket Hideout — B2F
• TM08 Body Slam — S.S. Anne 1F Rooms
• TM09 Take Down — Silph Co. — 5F
• TM10 Double-Edge — Rocket Hideout — B3F
• TM12 Water Gun — Mt. Moon — 1F
• TM13 Ice Beam — Celadon Mart Roof
• TM14 Blizzard — Pokémon Mansion — B1F
• TM15 Hyper Beam — Location not compiled for this game yet
• TM16 Pay Day — Route 12
• TM18 Counter — Celadon Mart — 3F
• TM19 Seismic Toss — Route 25
• TM20 Rage — Route 15
• TM22 Solar Beam — Pokémon Mansion — B1F
• TM23 Dragon Rage — Location not compiled for this game yet
• TM25 Thunder — Power Plant
• TM26 Earthquake — Silph Co. — 10F
• TM28 Dig — Cerulean City
• TM29 Psychic — Location not compiled for this game yet
• TM30 Teleport — Route 9
• TM31 Mimic — Copycat's House — 2F
• TM32 Double Team — Safari Zone — West
• TM33 Reflect — Power Plant
• TM35 Metronome — Cinnabar Lab Metronome Room
• TM36 Selfdestruct — Silph Co. — 2F
• TM37 Egg Bomb — Safari Zone — East
• TM39 Swift — Route 12 — Gate 2F
• TM40 Skull Bash — Safari Zone — North
• TM41 Softboiled — Celadon City
• TM42 Dream Eater — Viridian City
• TM44 Rest — S.S. Anne B1F Rooms
• TM45 Thunder Wave — Route 24
• TM48 Rock Slide — Celadon Mart Roof
• TM49 Tri Attack — Celadon Mart Roof
• TM50 Substitute — Location not compiled for this game yet
• HM01 Cut — S.S. Anne Captain's Room
• HM02 Fly — Route 16 — Fly House
• HM03 Surf — Safari Zone — Secret House
• HM04 Strength — Warden's House
• HM05 Flash — Location not compiled for this game yet

Bosses around here