There is no solid spec requirements for the game atm, although there are a few common quotes regarding possible requirements, and some educated guessing from the community.
Violet's response here
Posted By VioletWinterlynn at 6:53 PM - Sat Dec 16 2017
Caspian - 12/25/2016 Not yet. I've shared with people what we're developing on, which will be probably medium/target specs.
This is what was said by Casp~ hopefully it helps some because there isn't really a specific set of requirements yet
A common quote as well is referring to it being comparable to Ark: Survival Evolved, which Oracle lays out the specs for here
Posted By Oracle at 11:46 PM - Sun Mar 12 2017
Please note: The minimum specs posted for ARK are not considered realistic by the user community, and don't perform at all well.
Recommended baseline (ie for Ark)
Take this with a pinch of salt, but should give you a better idea for what's playable / performs reasonably well. More realistic specs would be something in the lines of:
Processor: 3.5Ghz+ Dual core or 3Ghz+ Quad core
Memory: 8 Gig+ RAM
OS: Win 7+
Graphics: 2GB+ ram. Geforce - GTX 750Ti or higher / Radeon - R7 265 or higher.
Disk space: Likely 60GB+ free
Note: The GTX 750 isn't a very powerful card. In terms of the Geforce series, each series starts with a prefix ie 7XX, 9XX, 10XX. The higher the prefix, the later the series. Within each series, the cards vary in gaming power. As a result, you may find a GTX 780 outperforms a 1050 significantly, so do shop around and compare performance if you're on a budget.
The link below is a good site to compare graphics card performance. Obviously, first and foremost, don't put too much emphasis on "market share" and "popularity" or such fluffy figures. Go by raw performance stats. Many powerful cards from older series can be found at bargain prices second hand. A GTX 780 for example, you can pick up for approx £120 on ebay quite frequently ;)
If your specs are above those posted above, you shouldn't have any trouble at all with decent settings. If you're close to the mark or struggle, drop anti aliasing first if it's a configurable option - it happens to be one of the most cost intensive, and only reduces angled edges on polygons etc.
Again, let me repeat:
There are no set specs for the game yet as it is not finished being developed
but hopefully this can give you some sort of idea.