A free program for Android, by NTT Studio Inc.

Fill The Blocks is a simple block puzzle game for Android devices that offers hours of fun for your leisure time. The game's objective is to drag and drop blocks to fill the lines and cubes on the board, while trying not to let them fall out of the grid. As you play, you'll gain experience points and will also unlock more blocks and themes. The higher the level, the more difficult the gameplay will become.

You can choose to play on one of the available themes (e.g. desert, snow, jungle, sea, etc.) and you can choose the difficulty level. To begin with, it's recommended to choose the easiest theme and level.