I'm going to attempt to build a take on a board game I loved, from 1989, MBT, by Avalon Hill.
Watch me face plant.
Starting by trying to understand hex math.
Any conversation
I'm doing experiments with short attention-span students and code. Starting with python, and, oddly, now working in BASIC. As a C programmer of 40+ years, I find this aesthetically and pedagogically displeasing, but I am delighted to see them getting fully absorbed in writing
130 PRINT "You have been eaten by a bear!" : GOTO 900. Yes there is spaghetti, but it's their spaghetti and they seem to take delight in debugging it. Python will come later. 
