As you can hopefully discern, the one on the left was used to promote Hudson's Lords of Thunder while the one on the right was used to push the TurboGrafx-16 and TurboDuo systems as well as a whole slew of HuCard and CD releases.
Anyway, here's a link to the "classic" Lords of Thunder video, and here are some links to the similarly cheesy--er, classic--"TurboDuo Game System and CD Software" video. (It's been divided into three segments. Here's the first, here's the second and here's the third.)
(Via iwasateenagepcenginefan.wordpress.com)
