I have a bunch of favorite games on various consoles...time for a long post xD
Sega Genesis
Sonic and Knuckles - really I loved ALL the original sonic games but to me this one seemed a bit harder than its predecessors. Plus, you finally get to play as Knuckles :D. Fun game, good graphics, splendid music, and amazing levels
Honorable Mentions: Streets of Rage series, Vectorman series, and Ristar. These games were full of awesome and fun. Streets of Rage was completly badass, Vectorman was just as amazing and both 1 and 2 had amazing music and fun levels to breeze through, Ristar was such a pretty game and, as said with the others, had entertaining levels and some cool music.
Sega CD
Sonic CD - isn't this like the only game released on the Sega CD :/. Well being a Sonic fan I can say that this is the BEST sonic game EVER. This game was awesome in so many ways. The music, well the japanese soundtrack <_< >_>, was so freakin amazing. The stages were so fun and with the time traveling elements this game was just to amazing. Oh...did I mention the speed <3.
Sega Dreamcast
Sonic Adventure 1 and 2 - Sonic Adventure 1 gave a very wild adventure to go through. Notheless, this game was simply great along with the music. I must say though, the voice acting was horrible. Sonic Adventure 2 introduced my favorite character, Shadow, to the sereies. In all, the game was loads of fun. Good music, improved voice acting, amazing stages, and oh so fun boss fights. What more could a sonic fan want xD.
Nintendo 64
My favorite game system of all time
Jet Force Gemini - I don't think this game is quite as known as other titles on the N64, but then again this game was created by Rare. Anyway, this game will always be my favorite shooter adventer game. The characters and the plot was well crafted. The enemies being giant ants were fun to shoot and even funnier to look at. This game was also highly challenging as well as the boss fights being intense.
Rayman 2: The Great Escape - the N64 was filled with plenty of awesome games so my list won't stop here xD. Thiis is one of my favorite Rayman games. The adventure was hard indeed and there was also some funny in the game. The boss fights were simply amazing and the stages themselves were frustrating.
Donkey Kong 64 - this games was magnifecent. A simply amzing adventure of DK and the gang
Dr. Mario 64 - I happen to think this is the best Dr. Mario game made. With an abundance of characters and a storyline to boot, this game will always be on the top of my list. Plus, me and all my brothers spent plenty hours battling it out in multiplayer
Mario Kart 64 - Again I think this is one of the best Mario karts.
Legend of Zelda: Ocarina of Time - best Zelda game ever.That is all xD
Honorable Mentions: Super Mario 64, Majora's Mask, Pokemon Snap, Pokemon Stadium 1 and 2. Mario Party 2(my favorite Mario Party :3), Banjo Kazooie and I think that's it.
I will post the rest later xD --------------> TO BE CONTINUED