This game is Action-Puzzle RPG.

A demon kidnapped the princess.
In order to save the princess, let's defeat the demon king.

■ Defeat the monsters in the puzzle!
When you tap the two blocks, the block is replaced.
If you arrange 4 for more the same block, the block will be destroyed.
When you destroy the block, you can attack a monster.

■ Let yourself stronger and stronger!
Use the money and experience points earned in battle, you can strongly yourself.