Instructions are not included with game;
Use the mouse to drag blocks up and down.
Align 3 or more to launch them.
Get blocks to the top of the screen to remove them.
Game ends when a column remains full for too long.

bgm.mp3 is missing; all links to it result in
403 Forbidden errors, only Wayback archive is a
404. Was found here;
http://game.g4team.com/g4meteos/bgm.mp3