fluidballs(6x) on Linux
The text 44cec5083710, as Debian 10 (Buster) shipped it.
the physics of bouncing balls.
Flags it lists
-
-count -
-delay -
-elasticity -
-fps -
-gravity -
-no-nonrandom -
-no-shake -
-nonrandom -
-root -
-shake -
-size -
-visual -
-wind -
-window