First off, this game needs a LOT of work. It's fun, but there's not much here. The only things that you can craft are basic building blocks from wood gathered, tools (just like the ones in Minecraft), and an assortment of guns. It's too simple! There's no need to make a crafting table in order to make better weapons, there's no form of armor, and there's no need to build a furnace to smelt the ore that you've collected during your mining adventures. I can't stress this enough. It's too simple!
Secondly, the game is really hard, despite it's simplicity. Even playing on Easy mode, the zombies would kill me in just 3 hits, which is ridiculous. To make matters worse, when you die, all of the items in your inventory are gone. Poof, vanished into thin air, so even if you manage to get back to where you were killed, you can't collect any of your stuff that you had worked so hard for. Oh, and did I mention that the zombies spawn almost right next to you? Yeah, random spawn points for ALL of the enemies, based entirely on where you are. In other words, you are the spawn point for enemies. It's really unfair, especially when they take an entire clip to kill, can run at you faster than you can run yourself, and can kill you in 3 F#$KING HITS EVEN ON EASY MODE! Oh yeah, and a Dragon will come by and F#$k your s#$t up royally every couple of days...
Which brings me to my next issue. The day/night cycle on this game is absurd. Days only last a few minutes at best, and the night lasts forever! I got into the game, was looking through the UI for the crafting and by the time I had understood how everything worked, it was night time and I was getting my face ripped off by a zombie. It's ludicrous how short the days are and how long the nights are. SERIOUSLY needs to be reworked.
Lastly, and this is just a nitpicky thing, the sensitivity is really high, and even when you adjust it, it doesn't change anything. When you're in standard view, if you twitch in any direction, you'll practicially do a 180, but when you aim down the sight, you're lucky to get the damn thing to move. It's very unpolished. Honestly, I'd stick to Minecraft if you're looking for a sandbox crafting type game, it has way more to do, the enemies are balanced and won't continually spawn right next to you, and if you die, you can at least get your stuff back (if you manage to get back to the spot where you died fast enough)