I really really loved this game however after about 100 hours (when you've unlocked everything) it gets kind of boring; But, those 100+ hours were some real quality sh*t.

In my honest opinion:

-Gameplay 11/10 (Best sci-fi ship (captain) simulator i have ever played)

-Fun (till 20h in) 11/10 (Super addicting)
-Fun (till 50h) 8/10 (Game is awesome, however at this point you've done the most of the reasonable things there are to do, so not that much content left without mods)
-Fun (100h+) 6/10 (At this point you've surely unlocked 98%+ of the stuff, and doing the same kind of thing yet again (another run) just gets boring, however that's the case with every game when the game runs out of content)

-Graphics 8/10 (Honestly they are not that good, however there is something catchy and i love that)
-Music 10/10 (I just love the soundtracks)

-Mods (I haven't really tried many mods, so it's hard for me to rate this category; However most of them add yet another vessel or another solar system)

PS: I said that i have over 100 hours, but on steam i have only about 20. The reason for this is that I used to have no money, so I had to pirate most games I wanted to play.