If the universe was fine tuned for our life...

[The Grand Nudger]

What do you mean by "wash between"?

If realities can be broken into "subrealities", and both "our reality" and minecraft are examples of realities - plural. If you want them to be similar enough to draw comparisons that might hold, or in fact two examples of the same thing..a "subreality". Rather than, say, one example of the same thing. If you feel that you've come to some conclusion that the two are similar I'd have to suggest that this is only because you assumed it from the outset by demanding that we consider minecraft a "sub-reality". Even so, it wouldn't matter, because now we're talking about computing, and we have no indications that "intellect" is required for computation, or for a universe in which computation is possible. All that is required is interaction and uniformity of effect (we can even wiggle on the last bit).

Minecraft reality is dependent on our reality....

-and yet fantasy is possible in that "sub reality" - so whatever dependence you might wish to invoke it's going to be entirely superficial. A minecraft server is a physical place. What happens "in minecraft" -actually happens- in "our reality". It would happen in any system capable of doing the work that the system minecraft refers to does. Intellect or not. Nothing is happening in a "minecraft reality" that doesn't happen when toilet paper rolls bump into each other.

but it does not come into existence without the presence of an intellect.

It's just o's and 1's playing out on a machine amigo. We use interpretation to "make it" analogous to what you perceive to be some other "reality" discrete from this one. A clever fascimile of how we perceive "our reality" but lacking, in many ways. We're not actually making a world when we load a chunk Heywood.....we're lighting up digital gates -in this world...to paint pretty pictures on a screen that our eyes can see. The reason that we can do this has nothing to do with intellect, so far as we're able to observe...and everything to do with the attributes of a universe in which logical functions can-be-achieved...by any means. That you even thought minecraft would be a friendly example boggles the mind...a minecraft world, a synonym to you for a sub reality..and precisely like our own in this respect at least (so sayeth you) is a product of procedural generation.....so even if we allowed a comparison to hold (for no reason - and with much reason to the contrary)............what is required is procedure, not intellect. Intellect, in minecraft, is used (by the player...and even that;s a generous concession to conversation given the subject matter) to -alter- an existing procedural generation. No intellect needs to be present for the generation to come into existence. It's a random number generator (if you weren't aware of how minecraft worked...you're welcome) housed in a machine. If a rock hit the enter key - voila, minecraft world - or, as you prefer "sub-reality".

It appears that sub realities only come into existence via the hand of some intellect.

Does it? Point to one? All I see is a continuos expression of one reality that happens whether we're there to observe it or not, whether we designed it or not. Accidental computers work just as well as intentional ones - for the same reasons.

It appears that our reality is a sub reality.

Oh? Less assertion more elaboration. What leads you to this conclusion?

Therefore there is reason to believe our reality came into existence via the hand of an intellect.

"Therefore" is generally reserved for statements that follow from sound premises in a valid form to a logical conclusion. What you've done here is confused what we know to be an intentional effect of the manipulation of a system that does not require intellect, well known, well understood, well contained and described..... as an objective "sub-reality" of some other imagined or assumed system. It's almost as if you thought that the bird -actually appeared- out of the rabbits hat......