Minecrafter Ersatz _ has come up with a clever recreation of Portal 2, without using mods, plugins, or anything but vanilla commands and custom resource packs! That's right, this map is mod-free, and uses only a resource pack to tell the story. Even the portal gun (done by Adrodoc55) is done mod-free, and it's all pretty incredible.
Unfortunately, the map is not yet currently available - the creator is ironing out bugs and the like - but what is already on demonstration is pretty impressive! Would you play this when it came out?