Perhaps the best "Low Poly" type genre zombie survival game currently available on steam in my opinion being better then "walking zombies 2".

Great Balance of zombies toughness and environmental random battles with bandits and AI to. (which had annoyed me when i first started playing, overtime you adapt and get used to it)

The loot/AI/environment variety options you can adjust very easily to your liking, play with easy world type or extremely hard alongside the options of Intermediate to, or have complete twist of mix difficulty to your custom choosing.

RNG also makes it more fun knowing the bandit, military, scavengers camps can spawn anywhere and switch at every save you have saved/loaded. (this can be customised to.)
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The game was just right for me!

I was looking for solo zombie survival game, where i can chill and play but had the aspects of games like day z, walking zombies 2, sons of forest and other games combined into one but with ease of mind in the game-play..... this game for sure passes it for me.
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The cherry on top would be the following;
1. Constant updates by listening/surveying the community say, and releasing monthly updates based upon what you hear.
2. Adding multiplayer/co-op which has already been said by probably 90% of the other reviewers. (The true game changer for this game).
3. Adding a mod feature, where community can make their mods/skins, weapons , etc and add to the game. (the next game changer after multiplayer/co-op)
4. Down the line perhaps add new maps, or keep same map extended out with repeated structures.
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Wish the devs best of luck

Looking forward to this games future, hope the developers realise this game has a lot more open potential left in it, and that door opens once Multiplayer becomes active/online for this game.
Add mods in the further future, once/if multiplayer ever becomes a reality for this game, i can see its player base rising fast alongside its sales.
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PS. I haven't done review in long time, everything above is just my own opinion, did this as one of devs was a mate on steam, and i actually enjoy the game :) Its worth full and sale price for sure!!