This game was overall too hyped out when it first released and in the start had many bugs, and glitches, and just felt like a sandbox. But now, Steel Wool fixed all the glitches after the game has been out for 1-2 years and now can be enjoyed.
But, the Ruin DLC also has been released and it is 10x harder than the original FNAF sb you get. I am speedrunning FNAF SB and is on the leaderboard right now but I can't seem to complete this DLC.
The game has a great story though and once you get to know all of the characters, you get this sort of heart-to-heart connection with them.