There are really great titles from every era of video games, just like for books, music, or movies. You’d be doing yourself a disservice to stick to “only” 8-bit or 16-bit consoles.
Side note: the number of “bits” is the so-called word length of the system’s CPU. That’s how many bits fit in a single register. So, an 8-bit console can add two 8-bit numbers together in 1 clock cycle, but will be much slower with bigger numbers. So, you’ll get fewer colors to pick from, no advanced 3D graphics, etc. A 16-bit processor can hold numbers with twice as many digits, so it’s much more capable, but there’s a lot more to a system than its number of “bits.” It’s mostly a marketing thing; back in the 90’s, Sega ridiculed Nintendo’s NES because it was 8-bit, and the new Sega Genesis was 16-bit.
In retro gaming discussion, the “bits” usually refers to generations of consoles. The NES and Sega Master System were both in the 8-bit generation; the Super NES and Genesis were the 16-bit rivals. The next generation was the Playstation vs. the Nintendo 64 (so much for 32-bit). Then gamecube/ps2/xbox, and so on. The NES, SNES, and Genesis get the most attention usually, but there are tons of other, lesser-known consoles, each with their own essential games. The N64’s generation is kind of on the borderline between “retro” or not, but everything prior (16-bit and earlier) is fair game. And let’s not even get into handhelds!
I learned a lot about the era by watching the Angry Video Game Nerd. It’s got incredibly dated early-internet-culture vibes, but it still kind of holds up somehow. If you’re interested in the physical consoles/hardware angle, My Life in Gaming is a great resource.
If you’re just getting started, I would recommend looking at emulation, which lets you play games for retro consoles on a PC. While using an emulator is completely legal, downloading games you don’t own is piracy, and therefore illegal. Please don’t link to “rom websites” or ask where to find game files on this forum. The legally-acceptable approach is to “dump” game files from the cartridge to a file. However, most of the copyright owners for these old titles are defunct, or don’t terribly care about their SNES library’s sales. As a result, most retro games can be classified as “abandonware”—they are still under copyright protection, but the copyright owner is unlikely to bring legal action for violations.
There are a ton of emulators out there for all the different consoles. But, they all have different options (or a lack thereof) for video scaling, video filtering, vsync modes, input remapping, supported controllers, etc. This is why I use RetroArch; every “emulator” has its UI and other features stripped out, leaving just a so-called core. Input, video, audio, drivers, recording, configuration, netplay, ROM selection, etc. are all handled by the RetroArch frontend and the Libretro API. It’s more complicated than running ZSNES in windowed mode, but it gives you fine-grained control over everything, and it works for every emulator you could want. It’s also cross-platform.
Playing on real hardware is more complicated, and expensive. Retro consoles have a low-resolution, analog video output. LCD televisions will add delay (aka “input lag”), and usually put a blurry bilinear filter on the image. Some will also misinterpret 240p as 480i, resulting in an unpleasant flickering or “vibrating” appearance. Newer TVs don’t even have analog inputs, so you’ll need a converter box. There are really crappy ones for $20, or retro gaming-oriented ones for $100+. The real solution (in my humble opinion) is to get a CRT television and play on that. For a minimum-cost setup, go to Goodwill and get any CRT with at least the yellow RCA jack on the front. Bonus points for S-video or component, but few consoles can output in those formats without a mod.
So, jennings92, is there anything else specific you want to know? Recommended games, RetroArch troubleshooting, video signal formats…