I purchased this game when it was still in Early Access for the full price (was $25 when I bought it). Developers promised a lot of things, new features, customization, and a vast amount of gameplay. Unfortunately, none of these promises were delivered. I bought the game because I enjoyed Double Fine's Brutal Legend. They seemed like a trustworthy developer that could get a fun quirky game done and make it worthwhile.
After months of no updates and no communication I began to lose heart. The minimal amount of playtime (logged 0.6 hours) was due to the lack of a tutorial (which they have since added, and it's sub-par) and (I assume) a bug that prevented my characters from entering the base I built. I started another game, and again they wouldn't enter the base I built and ended up suffocating. Started another game and I finally got them to enter the base, and that's where more bugs appeared. Just read the forums to get an idea of how frustrating the bugs are and how broken the game is, despite it getting a full release.
Very disappointed in Double Fine. Their lack of communication regarding the game's development, refusal to be honest with people who bought their product (e.g. not letting us know they planned to stop development and leave the game as is), and the fact that they had the gall to release the code and tell the community that if they like the game, then they have to fix it. Come on.
To conclude, I'd say avoid this game, it will receive no further updates, and as it stands it's an incomplete mish-mosh of ideas. Even for $12 I'd say skip it. Hopefully they update Gang Beast, which I also purchased before this fiasco, although it hasn't received an update since the day I bought it (2 months ago).
Update: Source code has been released...and there are still parts of the code that are hidden, as one person on the forum mentioned, the Oxygen Recycler. One of the most basic units of the game. It's used to prevent your base from losing oxygen, thus preventing everyone from suffocating.
Update #2: Price has changed to $20.01 (from the sale price of $12), and that's about it. Tried playing the game again and it wouldn't let me complete the tutorial (was not allowed to place a second airlock door where it indicated). Still have yet to build my own base. They supposedly also fixed some bugs on October 30th. This is what one user had to say:
"crlsniper Nov 1 @ 2:30pm
Glad to see your working on fixes, though the bigest fixes need to be AI fixes, Mostly for doctors and security. I lost an entire base just because none of the doctors would go help people who where incapacitated, neither would soldiers go arrest and move raiders who where incapacitated either."
Multiple counts of the same complaint. Furthermore, despite where you establish your base, you will have near constant attacks from pirates/raiders.
Some brave souls have attempted to mod the game (essentially having to rebuild the game from the ground up), check this thread out: http://steamcommunity.com/app/246090/discussions/0/613940477963640858/
It outlines a lot of the bugs and problems with the game, such as faulty oxygen recyclers (e.g. too many people in a room would cause dramatic decreases in oxygen no matter how many recyclers you had, thus everyone in that room eventually would suffocate).
Update #3: Free copies of Hack n Slash were provided to buyers of this game (myself and a few others received a copy), however it strikes me as more of a political ploy than a genuine apology. This is because people who purchased Hack n Slash got a copy of this game. As far as I know, Hack n Slash purchasers weren't spat upon and kicked to the curb by Double Fine, so this move makes no sense to me.