Xonix applet.
This is the antique Xonix game. The last time I saw it was 8 years ago (in 1989) on a PDP-11. The rules are apparent.
You can capture an area by surrounding it with your "tail", and the aim is to capture more than 60% of the field.
You must avoid the red "Xonixes" cutting your "tail".
Control keys:
move left;
move right;
move up;
move down;
Space stop;
[index]
[tetris]
[xonix]
[funny buttons]
[fox hunting]
[julia fractal]
[SIRDS]