Algodoo

Marbles: Red, Orange, Yellow, Green, Lime, Turqouise, Cyan, Blue,
Purple, Pink, Magenta, Red - Magenta Trans. version,
Red - Magenta Dark version, Red - Magenta Light version,
White, L. Gray, Gray, Dk. Gray, Shadow, Black, White - Black
Transparent version, Bronze, Silver, Gold, Diamond, Ice, Glass,
Rubber, Steel, Stone, Wood, Cake, Spikey Ball, Jack Spero,
Erikfasset, John Dubuc, Jelle's Marble Runs, carykh, TheMarbelousMaster,
YouTube, Bendy, Angel White, Devil Red, Cuphead and Rainbow

Choose one of those marbles you think will win! NO SWITCHING!!

PART 1: 2 legs
84 marbles

At each leg, 7 marbles are elinimated.
Good luck with your marble!