Retro gaming is the only way to go. Really the only games I've gotten for new systems stopped at n64. After that, I bought jk2, jka, wow, and swg at release. For the last 15 years or so, I've only bought consoles years after release. I bought Wii about 5 or 6 years for super mario, dk, and the lego games (btw all mostly AMAZING games), and then Xbox 360 about 3 years ago for the Halo games, and of course the new lego games (not available for wii any longer).
My favs:
Sega:
the original mortal kombat...I remember being 7 or 8 yrs old and fighting goru at 7am lol.
Sonic 2...I remember never getting passed the aqua run level (returned to as an adult and can speed run it now lol).
Sonic and Knuckles...PLUG IN AN OLD GAME AND IT ADDS KNUCKLES ANDD MORE LEVEL FEATURES?!?!@!?!@ OP. GGNORE.
Streets of Rage series....and the Spiderman game, Maximum Carnage...best sidescrollers to date...Contra has an honorable mention here too.
NES
Super Mario 3...one of the best games ever made. Learned to speed run this too! My best time was 16 minutes.
SNES
Super Mario World and Mario Kart...clutch, classic.
Street Fighter series and Primal Rage...yes. THE fighter games. That raptor in primal rage will flawless you.
DKC and in particular Donkey Country 3...my favorite game of all time maybe? I logged 100s if not 1000s of hours playing this...once speed ran it in 34 minutes, got 105%? in 2hr and 30 minutes (or something like that...twas about 10 years ago now)!
Playstation
Crash Bandicoot and Gex the Gecko...Remember them, praise them. Avoid alligators, avoids TNT. Crash was so hard to over 100%.
ALL of the Marvel fighter games...X-men children of the atom, marvel super heroes, x-men v street fighter, marvel v capcom...these games started a whole sub-series of competitive gaming....135 hit combo, hyper combination finish, Berserker Barrage X, Wolverine wins.
Road rash
Dreamcast
Sonic adventure and Crazy Taxi...yiss exploration and time challenges. go fast. need to go fast.
Mod chipping...my friend and I beat almost 100 older games using mod chipping for the first time and a disc with 100s of roms.
N64
Everything. Really. Obviously graphics have come a far way, and the controller requires 3 hands but...
mario 64, kart 64, mario party, wave runner, dk64, shadows, pod racing, star fox, zelda, smash bros, golden eye, the wrestling games, it's endless. So many hits, so little time and space. I remember spending many nights eating dominos and getting drunk with my friends playing all of these titles until 5am.
I mentioned the newer consoles above...thanks for reading...buy older systems. Play them, hold them. Sleep with your link to the past cartridge.
Shink