Do they have gamecube games? What are some of the best gamecube games?

Yes they have GameCube Games. Super Smash Bros is a great game.

They do for sure mate, they have a great selection too. Reasonable prices all the time too. When it comes the best games ask the workers

Sonic adventure 2 battle, Sonic DX, NBA street V3, SSX,

I would recommend Luigi’s Mansion

Super Mario Sunshine and Wind Waker are two classics on it. Animal Crossing was also pretty fun. 👍

They do. Unfortunately I never really played game cube so I wouldn't really know