The 1981 video arcade game by Taito converted to an addicting flash game.
The goal of this old retro game is to claim at least 75% of the playfield by drawing lines and closing shapes with a marker. The marker can move on the white lines. To leave a line and draw a new one the player has to press another key. Shapes drawn slow score double points.
Press SPACEBAR to start. Use ARROW KEYS to move. Press and hold X or Z (Y) in addition to ARROW KEYS to draw a line fast (X) or slow (Z).