[hk__2]

The key part is you need a "pencil dice" to play these.

[andrewflnr]

Or regular dice, presumably. Or a regular pencil with 1..6 written in its sides with a sharpie. You can also make a spinner with just a few lines and a paper clip.

[lIl-IIIl]

If you watch the "Galaxy" demo video you see that there are some "pre-rolled" numbers built in.