Picking gems

On each turn, player selects five locations on the map that don't overlap a checkpoint, gem , rock , start or exit. In each of these five locations, one of eight basic gem types randomly appear, with quality being random but dependent on how far chances have been upgrade d.

When player clicks on the gem picked that turn, they're given options to either Keep,

Combine



or Combine Special that gem with other ones picked on that turn, upon which next wave will arrive. If the gem completes a Special combination, Combine Special is then given.



Basic gems kept on the last wave may be downgraded to lower grade variant. Special gems can be upgraded for money.