Here are the effects of all the Spell Runes in the game:
- The Bomb Rune explodes, hitting all adjacent Runes.
- The Slash Spell Rune will clear Runes diagonally. It will choose the longer diagonal for greater effect. The Cross Slash Spell Rune will slash in both directions of the diagonal, in an X pattern.
- The Bolt Spell Rune will clear one Spell Rune that is two spaces near it, as well as a certain amount of Elemental Runes. The Bigger Bolt has the same effect, except it shoots more bolts out.