I was an executive attending a major computer conference back in the 1970s where 3M Computer Products was promoting its independent “Winchester” discs and other storage devices for use with IBM and other mainframes. We were all presented with a boxed set of four board games with playing pieces, dice, &c. entitled:-
GAMES OF LOGIC FROM 3M
THE PROBLEM SOLVERS
See here, where you will find links to photographs of the boards and rules.
The fourth game was Castillion, a new game, presumably developed by or commissioned by 3M. Other than the German Rosenbaum games link above, I’ve never found any reference to the game at all.
Are there any players? Is there any interest in 3M Castillion at all?
Note that there is a more recent game called Castillion which is quite different, see here.
Thanks for your interest,