Pokémon FireRed: Rocket Edition: Starting out — Celadon City HQ (and everything no mission gates)

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

Now usable

• Walk in grass or cave floors
• Surf — Surf (HM03, from the scientist on the top floor of Team Rocket HQ in Celadon City, alongside Fly)
• Smash a rock — Rock Smash (HM06)
• Fish with the Old Rod — Old Rod
• Fish with the Good Rod — Good Rod
• Fish with the Super Rod — Super Rod

Newly reachable

Newly catchable (58)

ChanseyDewgongDittoDoduoDragonairDratiniEkansElectabuzzExeggcuteFearowGeodudeGloomGolbatGoldeenGolduckGravelerGrimerGyaradosHorseaKangaskhanKoffingKrabbyLaprasMagikarpMagnemiteMagnetonMeowthNidoran♀Nidoran♂NidorinaNidorinoOddishParasParasectPersianPidgeottoPidgeyPikachuPoliwagPoliwhirlPsyduckRaticateRattataRhyhornScytherSeadraSeakingSeelShellderSpearowTangelaTaurosTentacoolTentacruelVenomothVenonatVoltorbZubat

TMs you can now pick up

• TM06 Toxic — Fuchsia City
• TM10 Hidden Power — Not found in this game's maps or scripts
• TM11 Sunny Day — Safari Zone (pick-up)
• TM12 Taunt — Not found in this game's maps or scripts
• TM13 Ice Beam — Not found in this game's maps or scripts
• TM15 Hyper Beam — Not found in this game's maps or scripts
• TM16 Light Screen — Not found in this game's maps or scripts
• TM17 Protect — Power Plant (pick-up)
• TM18 Rain Dance — Route 15 (pick-up)
• TM19 Giga Drain — Celadon City
• TM20 Safeguard — Not found in this game's maps or scripts
• TM21 Frustration — Not found in this game's maps or scripts
• TM22 Solarbeam — Celadon City
• TM23 Iron Tail — Not found in this game's maps or scripts
• TM24 Thunderbolt — Not found in this game's maps or scripts
• TM25 Thunder — Power Plant (pick-up)
• TM26 Earthquake — Fuchsia City
• TM30 Shadow Ball — Not found in this game's maps or scripts
• TM32 Double Team — Safari Zone (pick-up)
• TM33 Reflect — Not found in this game's maps or scripts
• TM35 Flamethrower — Not found in this game's maps or scripts
• TM36 Sludge Bomb — Rocket Warehouse (pick-up); Cerulean City
• TM39 Rock Tomb — Pewter City
• TM40 Aerial Ace — Route 9 (pick-up)
• TM42 Facade — Not found in this game's maps or scripts
• TM47 Steel Wing — Not found in this game's maps or scripts
• TM48 Skill Swap — Route 12 (pick-up)
• TM49 Snatch — Not found in this game's maps or scripts
• HM01 Cut — Not found in this game's maps or scripts
• HM02 Fly — Team Rocket HQ, Celadon City (the scientist on the top floor, at the very start)
• HM03 Surf — Team Rocket HQ, Celadon City (the same scientist, with Fly)
• HM04 Strength — Route 16; Pewter City
• HM05 Flash — Not found in this game's maps or scripts
• HM06 Rock Smash — Not found in this game's maps or scripts
• HM07 Waterfall — Not found in this game's maps or scripts
• HM08 Dive — Not found in this game's maps or scripts

Bosses around here