Recs.
Updated
7 Days to Die is a voxel based survival horror game that focuses on crafting and world building, all while having you take a hand at surviving in an undead filled post-apocalyptic world.
SpecsUpdate
Pros
Pro Randomly generated open worlds makes for a ton of replayability, as each playthrough is never the same
Recently added in the Alpha 9 release, randomly generated worlds allow the player a new play experience every time they open up the game. This means every server will have a different dynamic based on their layout of the world.
Pro Thoughtful and communicative developers allows for a stable community that keeps growing
Even though this is not directly related with the gameplay, it's still important especially for indie and early-access games. The developers behind 7DTD have always been communicative and have heard what the community had to say time and time again, releasing patches with bug fixes and new features in a timely manner.
Pro Single, co-op, and multiplayer gameplay modes give plenty of choice as to how one would like to tackle the game
Three different play modes including solo, with friends, or competitively over the internet gives a lot of choice as to how someone would like to play the game. Be it with friends or solo, the options are there.
Pro Great replayability
No matter how many times you start a new game (random gen) you will never get the same experience. The crafting is the same, enemies are the same, game mechanics are the same but the gameplay is not. If you add the mods available for this game then you will have a whole new experience with added/altered crafting, different enemies, more quests etc...
Pro What you build is not only for creativity, but also for gameplay purposes
In 7DTD players don't build their homes only as bases or places to sleep in, or build cool looking things just for the fun of it and to test their skills.
Every 7 days, a large horde of zombies will attack the player wherever he or she is, trying to destroy them and what stands in the way of the player and the horde. This is why the player needs to think about how to build traps that will help them kill a lot of zombies and how to make a strong enough house that will not be destroyed easily.