Gen 1
- Cut: Removes tree obstacles and tall grass
- Fly: Lets you easily go from place to place
- Surf: Lets you travel across water
- Strength: Lets you push boulders
- Flash: Lets you light up dark caves
- Dig: Lets you easily get out of caves
- Teleport: Teleports you back to the last Pokemon Center you were in
- Softboiled: Transfers 20% of the users HP to a teammate
Gen 2
- Cut: Removes tree obstacles and tall grass
- Fly: Lets you easily go from place to place
- Surf: Lets you travel across water
- Strength: Lets you push boulders
- Flash: Lets you light up dark caves
- Dig: Lets you easily get out of caves
- Teleport: Teleports you back to the last Pokemon Center you were in
- Softboiled: Transfers 20% of the users HP to a teammate
- Whirlpool: Lets you travel across whirlpools
- Waterfall: Lets you travel up waterfalls
- Rock Smash: Removes rock obstacles
- Headbutt: Activates trees to encounter wild Pokemon
- Sweet Scent: Activates a wild Pokemon encounter
- Milk Drink: Same as Softboiled
Gen 3
- Cut: Removes tree obstacles and tall grass, in Emerald a Pokemon with the Hyper Cutter Ability can cut larger areas
- Fly: Lets you easily go from place to place
- Surf: Lets you travel across water
- Strength: Lets you push boulders
- Flash: Lets you light up dark caves
- Dig: Lets you easily get out of caves
- Teleport: Teleports you back to the last Pokemon Center you were in
- Softboiled: Transfers 20% of the users HP to a teammate
- Waterfall: Lets you travel up waterfalls
- Rock Smash: Removes rock obstacles
- Sweet Scent: Activates a wild Pokemon encounter
- Milk Drink: Same as Softboiled
- Dive: Lets you dive underwater
- Secret Power: Lets you make a secret base
Gen 4
- Cut: Removes tree obstacles, no longer removes tall grass
- Fly: Lets you easily go from place to place
- Surf: Lets you travel across water
- Strength: Lets you push boulders
- Flash: Lets you light up dark caves
- Dig: Lets you easily get out of caves
- Teleport: Teleports you back to the last Pokemon Center you were in
- Softboiled: Transfers 20% of the users HP to a teammate
- Whirlpool: Lets you travel across whirlpools
- Waterfall: Lets you travel up waterfalls
- Rock Smash: Removes rock obstacles
- Headbutt: Activates trees to encounter wild Pokemon
- Sweet Scent: Activates a wild Pokemon encounter
- Milk Drink: Same as Softboiled
- Defog: Removes thick fog
- Rock Climb: Lets you climb up cliffs
- Chatter: Lets you record a cry for Chatot
Source