Drag a gem onto its neighbour (or tap one, then the other) to swap. Line up three or more of the same jewel to collect them.
4 in a lineforges a Line gem that sweeps its whole row or column.
L or T shapeforges a Bomb that blasts the gems around it.
5 in a lineforges a Prism — swap it with any gem to clear that colour.
Special + specialswap two specials together for a huge combo.
Frostmatch on frosted cells to melt the ice beneath.
Moves leftturn into bonus Line gems when you finish early.