Post-apocalyptic-themed games, aka games set after the destruction of human civilization, are quite popular because usually these scenarios provide the right world for gamers to venture into foreign lands but still contain elements of the real world, such as modern weapons, foods, and so on. Well, it turns out that you don't need to spend money and buy something like the Fallout or Dying Light series to play this kind of game. From fighting zombies, mutants, to other players, try to prove your survival skills through 12 free-to-play post-apocalyptic games that you can download on Steam below. 

Note: the data on the player numbers are taken from the Steam Charts of Steam Database or SteamDB, a site that (as the name implies) collects various kinds of data about Valve's digital store. 

1. Stay Out

A shooter MMORPG title that plunges you into a terrifying world full of dangerous monsters. From its look, you could say Stay Out is an online and free version of the S.T.A.L.K.E.R. series. Unfortunately there are pay-to-win elements that let you immediately get good weapons in the early game. In the last 24 hours there are about 809 people playing this game. 

>> Download Stay Out on Steam

2. No More Room in Hell

Like the undead, zombie-themed games seem to be always popular. This multiplayer game designed for eight players provides over 30 types of weapons and Infection features; when bitten you will turn into a zombie, will you tell your friends or keep your mouth shut until you find a cure and threaten the safety of your team? This free-to-play online game is still being played by 584 people. 

>> Download No More Room in Hell on Steam

3. Will to Live Online

Featuring a S.T.A.L.K.E.R.-like theme, you explore a nuclear radiation filled areas, populated by savage monsters and mysterious "anomalies". But Will To Live Online has more survival gameplay elements. In addition to dealing with mutants and looters, you'll have to protect yourself from nuclear radiation, as well as hunger and thirst. Luckily you can trade and team up with other players. This survival title was played by 1,348 active players. 

>> Download Will To Live Online on Steam

4. Hideout: Face your fears

The world of Hideout is filled with deadly robots who are hunting humanity to extinction. However, the main character, May, has to leave the safety of the bunker to find a cure for her sick brother. Avoid the robots, explore the city, then find a cure and unravel the mystery behind the destruction of their world. This game can only be played alone. 

>> Download Hideout: Face your fears on Steam

5. Idle Wasteland

Even though the title said idle, this game is more accurately called a clicker game. Venture into the post-apocalyptic streets filled with dangerous monsters to collect resources and ancient artifacts to strengthen your character. This game is also a single-player title. 

>> Download Idle Wasteland on Steam

6. Keep Trying! Zombie Apocalypse

Another single-player game that you can try to fill your spare time. Your task here is very simple: just shoot the zombies until the boss appears and annihilate them all. Armed with three different types of weapons, to what extent can you survive against the army of the undead? 

>> Download Keep Trying! Zombie Apocalypse on Steam

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7. Wasteland Survival

If you're looking for a free-to-play single-player survival title, Wasteland Survival is a post-apocalyptic themed game that's pretty decent. As you may have guessed, here you are thrown into a ruined world and must survive as long as possible. Search for materials, build bases and equipment for hunting, and explore a vast and dangerous world. 

>> Download Wasteland Survival on Steam

8. Fallout Shelter

If you like playing Fallout, you may have dreamed of creating your own Vault. If your answer is "yes" then you have to play this one title. The gameplay isn't complicated considering that Fallout Shelter is also on Android, you have to gather people and keep your bunker Vault equipment working so they can all live comfortably. But of course you have to be careful of bandit attacks and monsters like Radscorpions or Mutants. 

>> Download Fallout Shelter on Steam

9. Unturned

This survival FPS game with a voxel look just like Minecraft with gameplay similar to DayZ, Rust, and the like was created by a 13-year-old teenager from Canada, Nelson Sexton. The light graphics settings make this game still raking in 25,413 active players in the last 24 hours. 

>> Download Unturned on Steam

10. Hit n' Rush

This battle royale game takes place in the future. To determine the best warrior against the Rovers, humanity holds a massive battle royale tournament. Unfortunately the population of this game is very small, in fact there were only 12 people who played it in the last 24 hours when this article was written. 

>> Download Hit n’ Rush on Steam

11. Cloud Climber

Another post-apocalyptic-themed free single-player game. But quite different from most games, here you are invited to explore and unveil the mystery of a tower that was created by past civilizations for a reason. Having a focus on exploration and story elements, this game is made to be played briefly and will only take about 15 minutes of your day. 

>> Download Cloud Climber on Steam

12. Dear Future

Like the previous game, here your job is only to explore an empty city. Interestingly, you are "armed" with a camera that allows you to take pictures of locations that you find interesting and you can also leave messages for other players so that the mystery about the city can be solved together. 

>> Download Dear Future on Steam

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Written by Sidharta F. Rasidi: Twitter @StoPlayinGame