Unturned is in early access. Normally I'd steer clear of that too, but this is a great example of how Early Access should be used. The developer is constantly updating the game and keeping the players up to date with what he's doing with the game and what tweaks he's making. Believe it or not, but Unturned is actually also free. So if you are at all interested you can get it on Steam.
Unturned's map is of decent size. Consisting of small towns, waterfronts, a military base, and airport. You can repair cars to travel to these locations faster. Items also respawn after leaving your game so it's really easy to farm for more important items to fight off zombies and other players. Unfortunately, because famous YouTubers have played this game on their channels, you will find an abundance of little kids running around killing everyone. But you can still find normal servers or you can play by yourself in single player.
Unturned also has a fatigue system so you will need to regularly eat and drink to stay alive. This seems a bit extreme in game though. You will constantly have to be looking for food and water because you character begins desperately needing them after only about 5 to 10 minutes with out eating or drinking.
Unlike Minecraft, textures aren't very detailed. They are usually only one color; even on the highest settings. This is upsetting, but again, Unturned is in Early Access so that can easily change somewhere down the line. Unturned also doesn't currently have in game music. You may or may not like that depending on your preference. Walking around in the complete darkness of night with no music of sound can be pretty atmospheric, but some dark and lonely music in a setting like that would have been preferable. But right now, the only music is the main menu music.
Most computers shouldn't have a huge problem running it either. Unturned is very well optimized. You can customize just about everything in terms of graphics settings. There's even an option to enable a nifty little FPS counter to show you how many frames per second you are getting so you can change your graphics settings accordingly.
Unturned also has a pretty good crafting system. Though it's mainly only used for creating structures like player made homes and forts. There isn't any in game recipes on how to create items so you will more than likely be consulting the Unturned wiki pretty often to make a basic house.
Typically the best place to find any attachment is in the military base. So as soon as you find a map in game you should head there and stock up on guns and ammo. Scopes are especially varied starting with improved iron sights to red dot sights to scopes that can practically see across the entire map. While guns with no attachments can still get the job done, it's still nice to have attachments to make the job easier.
While the game is free, there is a optional "Gold Upgrade" that gives you some improvements in game. They aren't anything that make the game insanely different or make you over powered, but they are noticeable. It's only $5 and a one time charge. I recommend that you get this with the game. Not for the upgrades, but to support the developer. The developer of Unturned is a 17 year old kid and he's offering the game for free. In his own words when asked if the price of Unturned will ever change, “It will remain free, but the abilities provided by Gold may change. Nothing that will make the game pay to win, however.“
Unturned is a solid game that has a lot of potential and this potential may be realized since it is in Early Access. You have nothing to lose by checking this game out.
I hope you all have a wonderful day :).