I agree with THE1 above me. Some (but not all) games that were amazing during the 16-Bit era would still get rave reviews if they released in the same form without any improvement. Platformers, puzzle games, and games of that nature tend to age gracefully. In some cases, you begin to appreciate what you had even more. The most played game on my Playstation Vita is Final Fantasy Tactics--a game I bought back in 1998! But there are games that I would have tossed FFT in the garbage for back when (Tekken 3, Syphon Filter, Gran Turismo) and they are painful to look at, now.
Games that are based on tried and true gameplay are much more timeless than games that make their names on graphics, AI, or technological breakthroughs. The time will always come when those graphics become outdated (Sprites are immune), AI will improve, and the tech will become commonplace or even old. I used to think the enemies in Syphon Filter 1 were so smart. What a difference a decade or two makes.
