Man pages matching name xmball in section 6:

xmball.6.en	debian 10 / xmpuzzles
xmball.6.en	debian 10 / xpuzzles
xmball.6.en	debian 11 / xmpuzzles
xmball.6.en	debian 11 / xpuzzles
xmball.6.en	debian 12 / xmpuzzles
xmball.6.en	debian 12 / xpuzzles