Click inside the game window and press enter to start playing! (and turn your speakers on)

• Collect individual blocks into your buffer (bottom-right) by pressing 'r' when the cursor is over them.
• Send them, compacted, to the start with 'd'.
• You may have to re-arrange them first - press 'w' to write the buffer to the current cursor position.
• You can only collect a single colour in your buffer at one time, and colours must form contiguous and complete runs when compacted.