EDIT: With the recent release, the reviews of this game have gone from positive to mixed, so I'd like to edit my review (My opinion of it is the same though) so if you've already read this review, go to the bottom. If not, read the whole thing.
In-depth crafting and gathering system
No subscription fee
Hard to get into the game
Complex (can be overwhelming)
Perpetuum is an amazing game. I haven't played it for very long, but the time I've spent in-game was full of doing stuff. I know that sounds really vague, but that's what this game is about. Doing stuff. You can craft, PvP, mine, harvest, become a merchant, run a corporation, finish assignments, talk to others, explore, PvE... the list goes on. Some parts of the game I don't understand yet, but all in all, the devs did an amazing job. And there's no subscription fee, like Eve (a game that Perpetuum is compared with frequently, even though they don't have too much in common)
Verdict: BUY THE DAMN GAME
Edit: Okay, so the reviews have gone from positive to mixed, and you're curious why. You've read my review, you kinda want the game, but the other reviews are swaying you. Keep reading.
If you are considering buying this game, you MUST watch videos beforehand. A lot of people complain about the complexity, the combat, etc. but all of that could be avoided if you researched. Combat in this game is not the fastest, so if you're looking for Terminator: the Game or Transformers, and all you expect is fast paced bullets and a ton of explosions and death, this is not the game for you. This game requires you to lock onto your targets, which adds time and strategy to the process. I admit, I'm not a huge fan of the locking system, but I've actually found that it adds a unique spin to traditional shooting. Also, if you want a story-based game, don't get this. This is an open world game, meaning you do what you want. The map is huge, and you can explore, mine, harvest, craft, whatever. Assignments provide somewhat of a guideline for you, but there is NO story, so don't expect one! The game is what you make of it. Probably the strongest point of the game to me right now is the economy. The crafting system is in-depth, money takes time and effort to gain and not much time and effort to spend (but you feel amazing when you equip an awesome new armor), and it just flows well. So all-in-all, don't get this game if all you want is guided action. This game is what you make it to be, so if that interests you, join me and many others in a thriving world and economy and do whatever the hell you want.
On a scale from year-old spoiled milk to boobs, I'd say this game is a hot tub on a cold day. Basically, pretty damn awesome, but it's definitely not boobs.