The first time that Game Freak decided to reboot a series of Pokémon games came in the form of FireRed & LeafGreen, remakes of the original Generation I Kanto games. These remakes saw an updated Pokédex, the addition of mechanics that had been introduced in generations II and III, and an expanded world.

There are a ton of new things to explore in the Kanto region and the new Sevii Islands, so it's probable that there are a few things you missed. Here are some of the more notable things in FireRed & LeafGreen that many players might have missed.

10 Gender Differences

There are a few differences based on gender in these games. The first that one might encounter is the television in the starting house. If the player is male, a scene that is probably referencing Stand by Me is displayed. If female, the player will see a scene that is most likely a reference to the Wizard of Oz.

Additionally, male NPCs in non-Japanese versions have blue dialogue text, while female NPCs have pink text. In the Japanese versions, male and female NPCs have different fonts in their dialogue.

9 Save Time in the Safari Zone

Safari Zones were once a staple of the series, appearing in several generations. While they function differently in each game, the Kanto Safari Zone in FRLG will allow the player to take 600 steps before they are kicked out.

There's an easy hack to extend how many Pokémon you can try to catch, though. If you turn and face a different direction without moving to another tile, the game does not process the movement as a "step" toward your 600-step limit. However, turning directions can cause Pokémon to appear.

Another staple of some of the older games is the Item Finder, a key item that can find hidden and invisible items on the ground around the world. But, there are a few spots that you might not think to use it in FireRed & LeafGreen.

Most notably, the two sleeping Snorlax will have a Leftovers underneath them after they're defeated. This useful item will restore a bit of the holder's HP every turn, making it an invaluable and very popular item.

7 Pewter Museum

There's always been a bit of ambiguity surrounding the Pokémon world's relation to our own. Several references in-game are made to the real world, including Pokédex entries that reference real-life locations and mentions of real-life people.

One of these can be found (and is easily missed) in the Pewter City Museum. If the player reads the note on the space shuttle in the museum, it will make mention of 1969's moon landing.

6 No Umbreon Or Espeon

Generation II introduced a night and day mechanic, which allowed for new features and even new evolutions based on the time of day. The most famous example of this is probably Eevee, which will evolve into Espeon only during daylight and into Umbreon at night.

However, a night/day mechanic was not included in FireRed & LeafGreen, meaning Espeon and Umbreon cannot be obtained by evolving an Eevee. Players looking to complete their Pokédex will need to import the two of them from another game.

5 Typos

Most Nintendo franchises are very meticulous about typos and mistakes in-game, with a level of quality in that regard that is top-notch. However, a few times over the years, things have slipped through the cracks.

In FireRed & LeafGreen, there are a few mistakes that went uncorrected. At one point, the Key Items Pocket is spelled "POKCET," Also, category names are cut off in some versions of the games, depending on how many words they are. Pidgey is referred to as the "Tiny Pokémon" instead of its proper name as the "Tiny Bird Pokémon," and this happens for a few different Pokémon.

4 The Truck

One of the most famous schoolyard rumors in Pokémon history concerns the truck on the docks of the S.S. Anne's harbor. It was said that a player could find Mew underneath it if they made their way over to it across the port's waters.

As a probable reference to these rumors, the truck again appears in FireRed & LeafGreen and the player can find a Lava Cookie underneath it. The truck was even included with a hidden secret again in the Let's Go series.

3 Cinnabar Mansion's Exit

This might be a design mistake or the developers might have just not cared, but some players have pointed out a physical impossibility in Cinnabar Mansion. From the outside, the building has only one door. However, inside, there is a clear entrance and exit, and they're pretty far apart from one another.

When exiting, the player will come out the same door that they entered through. Is there a portal in this doorway? Nobody knows, but it's definitely a strange design choice.

2 Altering Cave

On Outcast Island in the Sevii Islands, players can find a strange cave that doesn't seem to serve any sort of purpose. Inside, there is nothing of note, and the only Pokémon that spawns is Zubat.

This is because this cave, Altering Cave, was meant to be used for an event but never was. As part of a real-life event, Nintendo planned to released event-exclusive Johto Pokémon that could be caught in the cave, but the events never happened. The cave remains a home to just Zubat and nothing else.

1 Lorelei's Dolls

In the Generation III Kanto games, the player can visit Lorelei's home in the Sevii Islands. The Ice-type-using Elite 4 member apparently loves collecting dolls, with a series of them that appear inside her home.

Every 25 times you defeat the Elite 4, Lorelei will add another doll to the collection, up to a maximum of eight dolls. This means you'll have to defeat the league 200 times, which is no easy feat. Many players have probably not noticed this small but definitely cool secret.

NEXT: Pokémon: The 10 Strongest Ice-Type Moves, Ranked