Omnipresence Or Wahdat Ul Wajood
Omnipresence refers to God’s knowledge of everything. It doesn’t mean that everything is a part of God and that there exists nothing outside of Him. Quran tells us that we and the entire universe are creations of God. Quranic concept of God is not only different from wahdat-ul-wujood, but it categorically rejects it.
Minecraft worlds do take space. They are stored in your computer’s hard drives. If you have a hard disk this will be induced by magnetic areas on your spinning disk. On an SSD the architecture is different but the same concept of magnetic fields apply. So if you count magnetic waves as a physical concept then they do take physical space. There’s nothing metaphysical going on here