Kanto

HeartGold HeartGold SoulSilver SoulSilver
Walking in tall grass or a cave
Route 25
During a swarm
+40%
L8–10
During a swarm
+40%
L8–10

Sinnoh

Platinum Platinum Diamond Diamond Pearl Pearl
Walking in tall grass or a cave
Eterna Forest
Not during a swarm
+20%
L11
No game in slot 2
+4%
L13
Sapphire in slot 2
+4%
L13
5%
L11
Not using PokéRadar
+10%
L10
No game in slot 2
+4%
L12
Sapphire in slot 2
+4%
L12
5%
L11
Not using PokéRadar
+10%
L10
No game in slot 2
+4%
L12
Sapphire in slot 2
+4%
L12

Unova

Black 2 Black 2 White 2 White 2 Black Black White White
Walking in tall grass or a cave
Castelia City
15%
L15–16
Black 2 Black 2 White 2 White 2 Black Black White White
Walking in dark grass
Castelia City
15%
L16–17