A recent re-discobery,
Rolling Thunder II and III.
The original
Rolling Thunder is not available for the Genesis, and it's a pity. It's a venerable action game (so venerable, actually, that once in my teens I mentioned it to my English teacher as one of my favourite arcade games and he was shocked) with pseudo-Bond ambientation and traces of platform in its gameplay. We play as a suave secret agent who is infiltrating some underground base, and although we dispatch enemies with firearms, most screens have two or more levels of height, and we must take that into account to succeed.
These second and third instalments add more action (if possible) and eye candy to the formula, and they can be seen as a more accesible and action packed alternative to the different
Shinobi titles for the system. And well, ninjas are so 80s... Bond instead will live forever as far as the movies earn money.