What power-ups are available in the game?

Combining power-ups helps you clear more tiles and produce bigger explosions. Here are the combinations currently in the game:
- Bomb+Bomb doubles the radius of the bomb effect.
- Bomb+Rocket removes three rows and columns of pieces.
- Rocket+Rocket removes one row and one column of tiles regardless of which way the Rockets are pointed.
- Bomb or Rocket + Frog makes the Frog take the Bomb or Rocket along with it to a random tile.
- Frog + Frog produces three Paper Planes that target different tiles.
- Rainbow + Rocket/Bomb/Frog makes the Rainbow turn all the pieces of one type (the one currently the most common on the field) into respective power-ups.
- Rainbow +Rainbow removes all pieces from the field, clearing one obstacle layer in the process.