Ice Climber (1985) NES gameplay 4K @ 60 FPS (NTSC) best quality

This is a demo with two players of the Nintendo Entertainment System 8-bit platform videogame Ice Climber (1985) with the maximum, original quality.
I recorded it using Nestopia, then a bit of editing with Adobe Premiere, then upscaling to 2160 with VirtualDub using the nearest neighbor algorithm to preserve the look and sharpness, everything done losslessly until KZbin itself.
This way we get a very nice and clean picture like the original, only much easier to see due to the higher picture size.
Hope you enjoy.