It was strongly based on the game plot but freely took off in its own direction at times, which honestly was fine. In fact, the new bits were the strongest ones, I thought. By contrast, the parts that did follow the game script did so... uh, quickly? I feel like there were... not the whole movie (it was fantastic overall, please don't get me wrong!) but there were parts where the fact that they crammed a ten-hour adventure game plot into an hour 45 or so kind of showed.
I feel like I enjoyed the game better overall, but that's like saying Ori and the Blind Forest is better than Star Ocean 2. I mean, it is, but they're such different games capturing different experiences that they're not really competing, and both are absolutely worth experiencing. The game did not "win" just because I enjoyed its experience slightly more; again, the movie was fantastic in its own way. Each version offered some really good stuff the other was missing.
I recommend both, for sure. I feel like doing the game first is the better approach if you have the time, both are available, and it's an option, but that's probably just because I did the game first myself and I'm biased by my own inability to imagine doing it any other way.
But yeah. Is good. <3
This is a cross-posted entry that originated from https://kjorteo.dreamwidth.org/446674.html. Please leave all comments there; I am no longer actively maintaining my LiveJournal blogs.