If you're looking for a new puzzle game to play on your Android device, Royal Block Puzzle might just be what you need. Developed by BlackPopcorn Games, this free game offers a unique twist on the classic block puzzle genre by adding a Sudoku-style grid into the mix.

The game is simple to play but challenging to master. You need to place blocks on a 9x9 board and fill rows, columns, or squares to clear them from the game. The twist is that you also need to collect Crowns to complete levels and reach the highest level possible.

The game has beautiful graphics and satisfying sound effects that add to the relaxing gameplay. You can play the game offline, making it perfect for when you're on the go. The game is also small in size, so it won't take up too much space on your device.

Overall, Royal Block Puzzle is a calm and zen game that's perfect for anyone who loves puzzle games. It's easy to learn and hard to put down, so give it a try and have a royal good time!