Pokémon Red and Blue/Route 4

New Pokémon Available

Red	Blue	Yellow
Ekans	Sandshrew	None

After the ordeal in Mt. Moon, Route #4 will probably seem like a walk in the park. There are no trainers to challenge you and only one area where you can run into wild Pokémon. Be sure to collect Whirlwind (TM 04) before you jump the hedge to reach Cerulean City. After you jump it, you won't be able to jump back over it to backtrack along Route #4

File:Pokemon RBY Route04.png

Route #4

Route 4 encounters

Rattata	45%	45%	15%
Spearow	30%	30%	55%
Sandshrew	N/A	25%	15%
Ekans	25%	N/A	N/A
Mankey	N/A	N/A	15%

Next stop: Cerulean City

No Going Back

Once you jump over the ledge, you'll be stuck in Cerulean City. If you need to train your Pokémon further before facing Misty, there's a field just outside of the city that you can reach. This field is home to several species of wild Pokémon. Blue players can pick up a Sandshrew in the wild here.

There's nothing particularly interesting in Route #4. All you'll find at this point is a item ball with TM 04 in it, which teaches a Pokémon the battle-ending (but relatively pointless) Whirlwind skill. There is also a hidden Great Ball (not designated on the map), a powered-up Poké Ball. Look on the first plateau of sorts (formed by the hedges which one can jump on all sides); it will be around the middle of the highest level. The Great Ball isn't there if you choose to get 5 free balls form prof. Oak earlier.

Be careful: When you jump down the wall to the southeast (and you'll have to in order to progress), you won't be able to go back!

#23 Ekans
Ekans is pretty cool, because he comes with Wrap built-in, and that's one of the best early skills in the game. Use it repeatedly against slower enemies to choke the life out of 'em while preventing them from ever getting an attack in edgewise. But on the down side, he doesn't really learn anything particularly interesting as he grows and evolves into Arbok.