Route 21 — Low Budget Crystal
Every wild Pokémon here, by encounter method.
Route 21 lists 12 Pokémon across 5 encounter methods (good rod, grass, old rod, super rod, and more), between level 10 and 40. Between them they cover 8 types: WaterSteelElectricGrassPsychicNormalFairyPoison.
Route 21 in other guides
The same area in other ROM hacks on this site. Each one has its own encounter table.
The original game's table for this area:
Good Rod Lv 20
50% of casts get a bite. These levels are fixed: fishing is one of the tables the game does not scale.
| Pokémon | Types | Level | Rate | |
|---|---|---|---|---|
 | Horsea | Water | 20 | 35% |
 | Krabby | WaterSteel | 20 | 35% |
 | Chinchou | WaterElectric | 20 | 21% |
 | Shellder | Water | 20 | 9% |
Grass Lv Base+1 to Base+5
2% of steps in grass start a battle. Wild levels are worked out when the battle starts: the game adds the number below to a base that grows with your badge count (1 with no badges, 41 with eight, 65 with all 24), then adds a random 0 to 4 on top.
| Pokémon | Types | Level | Rate | |
|---|---|---|---|---|
 | Tangela | Grass | Base+1, Base+3 | 50% |
 | Spoink | Psychic | Base+1 | 30% |
 | Spinda | Normal | Base+3 | 10% |
 | Mr. Mime rare | PsychicFairy | Base+1, Base+2, Base+5 | 10% |
Old Rod Lv 10
50% of casts get a bite. These levels are fixed: fishing is one of the tables the game does not scale.
Super Rod Lv 40
50% of casts get a bite. These levels are fixed: fishing is one of the tables the game does not scale.
| Pokémon | Types | Level | Rate | |
|---|---|---|---|---|
| Chinchou | WaterElectric | 40 | 40% |
| Shellder | Water | 40 | 30% |
 | Tentacruel | WaterPoison | 40 | 21% |
 | Lanturn | WaterElectric | 40 | 9% |
Surf Lv Base+1 to Base+3
2% of steps while surfing start a battle. Wild levels are worked out when the battle starts: the game adds the number below to a base that grows with your badge count (1 with no badges, 41 with eight, 65 with all 24), then adds a random 0 to 4 on top.
| Pokémon | Types | Level | Rate | |
|---|---|---|---|---|
 | Tentacool | WaterPoison | Base+1 | 60% |
 | Squirtle | Water | Base+1 | 30% |
| Tentacruel | WaterPoison | Base+3 | 10% |
Trainers here
3 fights here, in story order. ★ marks a gym leader or major battle.
| Trainer | Pokémon | Highest level |
|---|---|---|
| Fisher Arnold | 2 | Lv 9 |
| Swimmer Seth | 3 | Lv 12 |
| Swimmer Nikki | 4 | Lv 10 |
About these levels
Wild levels are not fixed. The game stores a step for each slot and adds it to a base that grows with your badge count, then adds a random 0 to 4. Those slots are shown as Base+1, Base+3 and so on. Fishing, headbutt trees, gifts and the Bug-Catching Contest are fixed and print as plain numbers.