Select the conditions that currently apply on your game and then press the Refresh table view button to update the table in accordance with your selections.

Cerulean Cave (2F)

Where?

Just northwest of Cerulean City. To get there, cross Nugget Bridge, go down the stairs on the left side and then surf down the river until you get to the cave entrance.

Naturally, you enter at 1F. Walk up to the water, surf up to the top and then turn left, go under the bridges, down and then up onto the platform on the left. Ignore the first ladder you see and instead go down, past the second ladder you see and down off the platform, then get onto the platform on the right. Continue walking along this platform, turning up where you have to; again ignore the ladder you see on the right and instead turn left, off that platform and then onto the next. From there, continue down off that platform and then get up on the very tall platform on the right. Go up this ladder, finally. You are now on 2F.

Head left and turn up where the path splits, then right where it splits again. From there, there is only one path you can take that ends at the top left corner of the floor, where you can take a ladder back down to 1F. From there, there is another ladder down a bit below, allowing you access to B1F.

Notes

Mewtwo (level 70) is lurking on B1F. Once you're down the ladder I described above, get down from that platform and then go around to the right, heading up. Follow the path to the top left corner, then right and finally down. Ignore the first narrow pass to the right, but go right where the path splits below and follow it onwards to the water. Surf up on the right and get back on the land there. Continue on upwards, onto the platform at the top, down off it on the right, continue all the way down to the water and surf in, turning right just below there. Get out of the water and go up on the platform on the right. Mewtwo will be standing there between two boulders. (The ladder behind it will then take you quickly back near the entrance after battling it.)

How to read this table

The bolded horizontal headings stand for the main condition that affects the following slots; the big cells on the left side describe which circumstances must apply for the rows they span to be active. The percentages tell you the chance of a Pokémon from this slot (row) appearing for any given wild encounter, provided the condition on the left holds.

Each condition (i.e. each bolded horizontal heading) always has the same number of slots active. Usually it's two, though the radio condition in HG/SS has four slots and tables can have any number of static slots combined under one blank condition (-) for less cluttered viewing. This is reflected in the slots usually being displayed in pairs, which except for the aforementioned HG/SS radio conditions always means that only one pair is active at any one time. (For the radio conditions, it's either two pairs or one quadruple.)

If all this confuses you, and I don't blame you, just set the conditions in the form on the right to what actually applies for you right now and press the Refresh Table View button, which will hide all the inactive slots and leave only the Pokémon you're actually going to be seeing. This will also recalculate the statistics at the bottom of the table accordingly.

Walking in tall grass or a cave

ConditionRarityHeartGoldSoulSilver
-
Always 20% Kadabra lv. 42 Kadabra lv. 42
20% Parasect lv. 40 Parasect lv. 40
Radio
Radio off 10% Golbat lv. 41 Golbat lv. 41
10% Machoke lv. 39 Machoke lv. 39
10% Magneton lv. 41 Magneton lv. 41
10% Ditto lv. 42 Ditto lv. 42
Hoenn radio 10% Absol lv. 41 Absol lv. 41
10% Absol lv. 39 Absol lv. 39
10% Makuhita lv. 41 Makuhita lv. 41
10% Makuhita lv. 42 Makuhita lv. 42
Sinnoh radio 10% Bronzor lv. 41 Bronzor lv. 41
10% Bronzor lv. 39 Bronzor lv. 39
10% Chingling lv. 41 Chingling lv. 41
10% Chingling lv. 42 Chingling lv. 42
-
Always 5% Electrode lv. 41 Electrode lv. 41
5% Wobbuffet lv. 42 Wobbuffet lv. 42
Time of day
In the morning 4% Machoke lv. 41 Machoke lv. 41
4% Machoke lv. 42 Machoke lv. 42
During the day 4% Machoke lv. 41 Machoke lv. 41
4% Machoke lv. 42 Machoke lv. 42
At night 4% Golbat lv. 41 Golbat lv. 41
4% Golbat lv. 42 Golbat lv. 42
Time of day
In the morning 1% Machoke lv. 41 Machoke lv. 41
1% Machoke lv. 42 Machoke lv. 42
During the day 1% Machoke lv. 41 Machoke lv. 41
1% Machoke lv. 42 Machoke lv. 42
At night 1% Golbat lv. 41 Golbat lv. 41
1% Golbat lv. 42 Golbat lv. 42
Statistics
Level range 39-42 39-42
Average EXP
per Pokémon
770.05 770.05
Average effort
per 100 encounters
20 HP
73 Attack
26 Defense
23 Speed
53 Special Attack
20 HP
73 Attack
26 Defense
23 Speed
53 Special Attack

Fishing with an Old Rod

RarityHeartGoldSoulSilver
40% Magikarp lv. 10 Magikarp lv. 10
30% Magikarp lv. 10 Magikarp lv. 10
15% Magikarp lv. 10 Magikarp lv. 10
10% Magikarp lv. 10 Magikarp lv. 10
5% Magikarp lv. 10 Magikarp lv. 10
Statistics
Level range 10-10 10-10
Average EXP
per Pokémon
28.0 28.0
Average effort
per 100 encounters
100 Speed
100 Speed

Fishing with a Good Rod

ConditionRarityHeartGoldSoulSilver
-
Always 40% Poliwag lv. 20 Poliwag lv. 20
Always 30% Goldeen lv. 20 Goldeen lv. 20
Always 15% Magikarp lv. 20 Magikarp lv. 20
Time of day
In the morning 10% Goldeen lv. 20 Goldeen lv. 20
During the day 10% Goldeen lv. 20 Goldeen lv. 20
At night 10% Poliwag lv. 20 Poliwag lv. 20
-
Always 5% Poliwag lv. 20 Poliwag lv. 20
Statistics
Level range 20-20 20-20
Average EXP
per Pokémon
231.12 231.12
Average effort
per 100 encounters
36 Attack
63 Speed
36 Attack
63 Speed

Fishing with a Super Rod

ConditionRarityHeartGoldSoulSilver
-
Always 40% Poliwag lv. 40 Poliwag lv. 40
Time of day
In the morning 30% Poliwhirl lv. 40 Poliwhirl lv. 40
During the day 30% Poliwhirl lv. 40 Poliwhirl lv. 40
At night 30% Poliwag lv. 40 Poliwag lv. 40
-
Always 15% Gyarados lv. 40 Gyarados lv. 40
Always 10% Gyarados lv. 40 Gyarados lv. 40
Always 5% Gyarados lv. 40 Gyarados lv. 40
Statistics
Level range 40-40 40-40
Average EXP
per Pokémon
736.2 736.2
Average effort
per 100 encounters
60 Attack
90 Speed
60 Attack
90 Speed

Surfing

RarityHeartGoldSoulSilver
60% Psyduck lv. 40 Psyduck lv. 40
30% Psyduck lv. 35 Psyduck lv. 35
5% Golduck lv. 40 Golduck lv. 40
4% Golduck lv. 40 Golduck lv. 40
1% Golduck lv. 40 Golduck lv. 40
Statistics
Level range 35-40 35-40
Average EXP
per Pokémon
493.6 493.6
Average effort
per 100 encounters
110 Special Attack
110 Special Attack

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