Pick the tracks, the countries, and (optionally) teams. The goal is for every marble to reach the green finish line at the bottom of each track. In team mode, a team only finishes a track when all its countries cross the line.
Tracks
Tap to toggle. Selected tracks play in the order shown. Team Sorting is auto-included when any team count is set.
Team Builder — assign each team a continent or sub-region, then click "Build teams" below
Countries
Click a country to add/remove it. In team mode, each click cycles its team color (off → Team 1 → Team 2 → …). Use Group by Continent to auto-split into 4 teams: ● Americas · ● Asia/Oceania · ● Europe · ● Africa.