blocktube(6x) on Linux
The text 37d78483a00d, as Debian 12 (Bookworm) shipped it.
draws a swirling, falling tunnel of reflective slabs
Flags it lists
-
--changetime -
--delay -
--fps -
--holdtime -
--no-fog -
--no-texture -
--root -
--visual -
--window -
--window-id -
--wireframe