You’ll find the entrance to the Diglett’s Cave immediately upon entering Route 11. You won’t be able to explore much of it right now, but you can at least check it out to get the Pokémon Diglett or Dugtrio early, which will help out a lot in the upcoming Gym.
| Diglett's Cave | ||||
|---|---|---|---|---|
| Tall Grass | ||||
| Pokémon | Types | Level | Rarity | |
 |
Zubat | 13-18 | 10% | |
 |
Diglett | 13-18 | 85% | |
 |
Dugtrio | 13-18 | 5% | |
| Rare Encounters | ||||
| Pokémon | Types | Level | Rarity | |
 |
Chansey | 13-18 | Rare | |
There’s also a Coach Trainer right near the beginning of the route.
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His Rattata hits pretty hard and likes to spam Quick Attack to ensure it goes first. He’ll reward you with either 5 Pikachu Candies in Let’s Go, Pikachu or 5 Eevee Candies in Let’s Go, Eevee. You can use these to raise all of your partner Pokémon’s stats by 1 for each candy you use, so it’s effectively a +5 to all of your partner’s stats for that one fight. Very nice! It’s definitely worthwhile using these if you’re using your partner Pokémon.
| Route 11 | ||||
|---|---|---|---|---|
| Tall Grass | ||||
| Pokémon | Types | Level | Rarity | |
 |
Pidgey | 13-18 | 25% | |
 |
Pidgeotto | 13-18 | 10% | |
|
Rattata | 13-18 | 25% | |
 |
Raticate | 13-18 | 10% | |
 |
Drowzee | 13-18 | 25% | |
 |
Mr. Mime | 13-18 | 5% | |
| Rare Encounters | ||||
| Pokémon | Types | Level | Rarity | |
|
Chansey | 13-18 | Rare | |
As for the rest of Route 11, it’s pretty wide open, with plenty of Trainers and wild Pokémon in tall grass around.
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In the northwest corner is Youngster Eddie and he’s packing a Nidorino. East of him is Gentleman Wilco.
Further east of Gentleman Wilco is a Lure sitting on the northern edge of the route. There’s also Engineer Bernie just to the east of him. Keep going east along the edge of the route to find Gamer Hugo — watch out for Gamers, as they often have very high-level Pokémon that use one-hit KO (OHKO) moves. In Hugo’s case, he has a Diglett that knows the move Fissure, which has at least a 30% chance of OHKO’ing your Pokémon, with the chance increasing based on the level difference. Flying-type Pokémon and Pokémon at level 27 and above won’t be hit by this Diglett’s Fissure.
There’s a Super Repel a bit past Gamer Hugo, which is similar to the normal Repel, except its effect lasts for more steps taken.
Keep going east and you’ll reach the northeastern corner of the route. There’s a hidden Revive in the rock south of the bushes. There’s also Lass Tomoe guarding the gate leading to Route 12.
South of the gate, behind the fence, are 5 Great Balls for you to pick up. Definitely be sure to do that.
There’s nothing really for you to do on Route 12, as the path is blocked by a sleeping Snorlax, but definitely go inside of the gate and climb the stairs. Talk to the man in the lab coat, one of Professor Oak’s assistants, and if you have at least 30 Pokémon species registered in your Pokédex, he’ll give you the Judge function for your Pokémon’s stats screen.
Each individual Pokémon you catch has a certain level of uniqueness to it, thanks to its nature, which can affect its stats.
However, even two Pokémon of the same nature at the same level can have differing stats — this is due to a hidden number, usually referred to as its Individual Value or IV, that ranges from 0–31 for each stat.
After unlocking the Judge function, you can view representations of these Individual Values on the Pokémon’s stats screen by pressing Y/◄. You’ll see a chart showing that Pokémon’s IVs along with a label beneath each stat representing how high that IV is.
Best indicates absolute perfection: 31, the highest it can be. Fantastic is second to that, representing an IV of exactly 30. Very Good is pretty darn good and a step below Fantastic, where it is almost near the top; Good is a much more modest range, although it can still be decent; OK is anything from about the middle range to near the bottom and isn’t really all that great; Not So Good is as the name suggests, not so good, and is near the bottom. Lastly there’s Worst, which is the absolute worst a stat can be.
This is a very helpful feature to compare your Pokémon and find gems among them. Although it doesn’t matter too much for simply getting through the game, it can be a good way to help decide which Pokémon of a certain species to add to your team, since you are encouraged to catch multiple Pokémon.
Also keep in mind that there are some Pokémon that are more likely or even guaranteed to have good IVs. Your partner Pokémon will always have “Best” in everything — perfect 31s across the board. A lot of gift Pokémon, such as Bulbasaur, Charmander, and Squirtle, will have high IVs as well. Legendary Pokémon, too.
You can increase the chances of caught Pokémon having good IVs by building up your Catch Combo to very high levels and repeatedly catching that same species of Pokémon over and over again.
On the southern part of the route, going west from the Route 12 gate, you’ll find Sailor Yasu. Directly west of him is an X Defense, followed by Engineer Braxton.
Further west, over near the beginning of the route, is a Super Potion sitting out in the open. There’s also Sailor Dirk in the southwest corner of the route.
That’s it for Route 11. Now you can return to Vermilion City and board the S.S. Anne.