4K resolution
So while 4K UHD sounds like it has a pixel structures with 1/4 the area of 1080p, that does not happen with pixel shifting. Only a true 4K projector offers that level of resolution. That's why "true" 4K projectors cost so much more than 4K UHD projectors with otherwise similar feature sets. They produce smaller pixels, finer resolution, no compromising of detail or color from overlapping pixels. By comparison, the slight difference in aspect ratio between DCI and 3840×2160 pixel displays without overlap is insignificant relative to the amount of detail.
Minecraft
"Minecraft 4k" is a simplified version of "Minecraft" similar to the classic version that was developed for the Java 4K game programming contest "in way less than 4 kilobytes". The map itself is finite—composed of 64×64×64 blocks—and the same world is generated every time. Players are restricted to placing or destroying blocks, which consist of grass, dirt, stone, wood, leaves, and brick.