I remember the CLIFF HANGER game as well! Tokyo Movie Shinsa apparently was trying to market all the LUPIN !!! anime as CLIFF HANGER at some point in the mid-80's.
I use to have a bunch of TMS promo materials promoting "Cliff Hanger"... I guess copy right issues have always kept Lupin the third from being properly marketed in the US.
www.itcamefromplanetx.com