I've had to set up a rota to use the Raspberry Pi. 1 hour each.
Someone... (ok - mea culpa) found that a simple
sudo apt-get install angband
will install a great rogue-like dungeon crawler.
I used to play this on my Archimedes 20-odd years ago and it's still just as addictive.
No - it's not 3d. No - it's not fast. But holy-moley, it's addictive.
We could stop at any point. Of course.