gbsplay(1) on Linux
The text 5570411e593a, as Debian 5.0 (Lenny) shipped it.
Gameboy sound player
Flags it lists
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-E -
-R -
-T -
-V -
-Z -
-f -
-g -
-h -
-l -
-o -
-q -
-r -
-t -
-v -
-z