It's a (opt. Co-Op) Pokemon Survival Craft Base&Factory Building Game with Guns.
While sometimes buggy and rough around the edges, and without offering many original ideas, the ensemble of everything they threw together is really good.
Sure, it's far from perfect, and every other moment, you can see the quite heavy inspirations they got from popular franchises.
But it's quite good.
While not surpassing any of its inspirations in the field they got inspired in, it offers all these other things the inspirations missed.
It's parts may not be that good, but overall, it's the combination of those parts that make it.