I introduced my 5 year old to my NES a few weeks back with Bubble Bobble (which he liked but was a little to complex for him); so I bought him Rampage which he absolutely loves and now wants to play my NES all the time. Just yesterday my wife let him play ‘Battletoads & Double Dragon’ which I think he likes even more than Rampage. Needless to say he’s hooked and I’m trying my best to limit playing time to 30 min a day when I get home from work.
I will say that watching him discover the NES for the first time is awesome and brings back great memories for me when I was a child. The NES is the first system he’s seen so the graphics are a non-factor, it’s purely about the enjoyment and playability of the game to him. He giggles and laughs uncontrollably when we are fighting robots or smashing buildings together. He loves playing two player co-op with me and always tells me “Daddy you are so good at this game”. It’s just a joy to see my child discover something I loved back in the day with the exact same enthusiasm I had some 28 years ago.