The 600 hour estimate of playtime in the ad is a bit too omtimistic, but you'll definitelly get your money's worth out of this one IF you don't mind roguelike mechanics too much (you don't have to like them).

Most (not all) of my points can be summarized as "Variety" . Here are the main few:

• Sandbox-y. This is the biggest advantage this game has, because it gives you several ways to perform the same task.
  
• Multiple classes/characters, with distinct playstyles. For example, soldier is an average starting class, a robot is built for OP melee, but runs on a rechargeable battery (puts some pressure) and a doctor is not allowed to kill, but can permanently put NPCs to sleep.
  
• Different playstyles are supported. This is the first roguelike I play where the main goal isn't just killing everything that comes close to you (although you can!).
  
• Procedurally generated levels and random quests. This is a relatively small point, but it essentially means, that even if you always play the same character, playthroughs will feel slightly different.
  
• Random loot This is another relatively small point. Loot varies and RNG can either give you a massive advantage by getting exact weapons you need or limit your options by getting a few bananas.
  
• Custom character. Once you get bored, you can mix and match abilities and drawbacks of other classes to create a custom one.
  
• It doesn't take itself seriously. Vast majority of games can't pull off meaningful lore or plot, but they still try.... That makes games that can laugh at their own flaws so much better. Here's a quote:
  The Zombie doesn't actually want to eat people's brains. I mean that's pretty gross. However, society expects it....

It's definitely not easy to start out. Everything, including weapons and armor in this game breaks, so you can't just go in and kill everything, unless you can do it with fists (and that takes some practice). It takes a little while to get accustomed to the rules of the game, but I would say the difficulty is fair.
I did get frustrated a few times, like when I was playing a slow, calculating stealth class and then the floor filled with slime (which pretty much means you have to do things fast or die) and essentially killed me. I came back to the game, though which says a lot how good it is.

• RNG I mentioned RNG being a good thing for keeping the game fresh, but it comes with a chance that you will be places in an unwinnable (with specific class) stage, or trip you up towards the end of a playthrough.
  
• Steep learning curve. It takes like 5 minutes to get the core mechanics, but the game doesn't tell you much about anything else. For example.: you'll find machines like ATM or Loadout-o-matic (or something like that) and it's not immediately clear what they do (even if you interact with them).
  
• Some characters feel useless. That is not to say that they ARE useless, but this is another thing the game fails to explain. Characters like Bartender do not appear to serve any purpose until you learn some of game's mechanics.
  
• Roguelike. As I previously mentioned, I am not a fan of roguelikes in general and this one shares most of common complaints about roguelikes. The problems are alleviated by game's great design, but restarting over and over again for stupid reasons is still annoying.

As mentioned before I would recommend this game to anyone who does not hate roguelikes. It's a unique one.

The 600 hour estimate of playtime in the ad is a bit too omtimistic, but you'll definitelly get your money's worth out of this one IF you don't mind roguelike mechanics too much (you don't have to like them). [h1]Why this one stands out[/h1] Most (not all) of my points can be summarized as "Variety" . Here are the main few: [list] [*][b]Sandbox-y[/b]. This is the biggest advantage this game has, because it gives you several ways to perform the same task. [*][b]Multiple classes/characters, with distinct playstyles[/b]. For example, soldier is an average starting class, a robot is built for OP melee, but runs on a rechargeable battery (puts some pressure) and a doctor is not allowed to kill, but can permanently put NPCs to sleep. [*][b]Different playstyles are supported[/b]. This is the first roguelike I play where the main goal isn't just killing everything that comes close to you (although you can!). [*][b]Procedurally generated levels and random quests.[/b] This is a relatively small point, but it essentially means, that even if you always play the same character, playthroughs will feel slightly different. [*][b]Random loot[/b] This is another relatively small point. Loot varies and RNG can either give you a massive advantage by getting exact weapons you need or limit your options by getting a few bananas. [*][b]Custom character[/b]. Once you get bored, you can mix and match abilities and drawbacks of other classes to create a custom one. [*][b]It doesn't take itself seriously.[/b] Vast majority of games can't pull off meaningful lore or plot, but they still try.... That makes games that can laugh at their own flaws so much better. Here's a quote: The Zombie doesn't actually want to eat people's brains. I mean that's pretty gross. However, society expects it.... [/list] [h1]Difficulty[/h1] It's definitely not easy to start out. Everything, including weapons and armor in this game breaks, so you can't just go in and kill everything, unless you can do it with fists (and that takes some practice). It takes a little while to get accustomed to the rules of the game, but I would say the difficulty is fair. I did get frustrated a few times, like when I was playing a slow, calculating stealth class and then the floor filled with slime (which pretty much means you have to do things fast or die) and essentially killed me. I came back to the game, though which says a lot how good it is. [h1]Drawbacks[/h1] [list] [*][b]RNG[/b] I mentioned RNG being a good thing for keeping the game fresh, but it comes with a chance that you will be places in an unwinnable (with specific class) stage, or trip you up towards the end of a playthrough. [*][b]Steep learning curve[/b]. It takes like 5 minutes to get the core mechanics, but the game doesn't tell you much about anything else. For example.: you'll find machines like ATM or Loadout-o-matic (or something like that) and it's not immediately clear what they do (even if you interact with them). [*][b]Some characters feel useless[/b]. That is not to say that they ARE useless, but this is another thing the game fails to explain. Characters like Bartender do not appear to serve any purpose until you learn some of game's mechanics. [*][b]Roguelike[/b]. As I previously mentioned, I am not a fan of roguelikes in general and this one shares most of common complaints about roguelikes. The problems are alleviated by game's great design, but restarting over and over again for stupid reasons is still annoying. [/list] As mentioned before I would recommend this game to anyone who does not hate roguelikes. It's a unique one.