Hello hello!
I think this is a great game, truly an unique Idea, I think noone here throught as far as you. I think you're a great designer, and the way the game looks is great, especially the 3D-Effect! Sadly, there's a few bugs (are to expect thoguh, in such a large game). What I mean by thins is that you can see the block's outlines, there's seeds floating around, sometimes I'm trapped inside of a block...
Now don't get me wrong, I'm absolutely loving the design! However, In my first attempt I got stuck on a cliff. After trying again, I wasn't able to go further than around 100 blocks, due to me getting stuck in a water puddle, not able to getting out. The game looks so cool, but just feels unfinished.
Overall, I'm calling 5 Star Design. The rest is kind of my opinion, it's s great game, with decent potential, but it's missing a tutorial, which should be easily done for you (two?), given you / you two have made such a big game. You two have too much free-time. okay this was a joke ;)
Sincerely,
MirageDev