goop(6x) on Linux
The text 4157d4c49b48, as Debian 6.0 (Squeeze) shipped it.
squishy transparent oil and bubble screenhack
Flags it lists
-
-additive -
-count -
-delay -
-fps -
-install -
-mono -
-non-transparent -
-planes -
-root -
-subtractive -
-transparent -
-visual -
-window -
-xor