I've narrowed things down. Which one would you choose?  

Thank you very much for your comments. I was aware that Super Mario 64 DS is somewhat different from the N64 version, but I was not sure how much the two versions varied from one another. I do know that you control different Mario Bros. characters during different points in the game. Mario, Luigi, Yoshi and Wario I think? With an avatar like the one that you are using, is it any surprise that a Mario game is your personal fave? Cheers.

I think that you are correct and it is a graet game, but has been a while since I played it. It should be obvious that Mario games are my favorite, but not sure if people know that. If they did how?

Well, of course they won't be able to read your mind, but judging from your avatar that can make a pretty good guess and speculate that you are a Mario Bros. fan. After all you are using a picture of Mario from the very first Super Mario Bros. game. It is an absolute classic and a great game. Cheers.

Thank you for your extensive comments. I don't have a problem getting my hands on any of these games. Most are still available in stores that are in my area and, even if they weren't, I can get them at the flea market. I am sure that I will pick-up several of the titles eventually, but I wanted to know which game others thought that I should concentrate on first. I did really enjoy the NES Ninja Gaidens, but it has been a considerable amount of time since I have played them. Sometimes a harder difficulty level can be advantageous if it extends playtime and keeps one interested. Cheers.

I appreciate your comments. I don't might a challenge and often find that harder games tend to keep me interested longer. I have played every Castlevania game for each Nintendo console, so I would imagine that sooner or later that I will get my hands on Order of Ecclesia. It has been given the thumbs up by several members on myLot already. Thanks.

you are welcome!