A lot more narratively driven than I was expecting, and I'm on the fence on whether that was a good move or not. Of course for the time it certainly was, though I don't think the writing has aged very well (in an "xD 2011 humor" sense, nothing bad). The original's idea of breaking out of the experiment, while superseded by plenty of other games by now, had a much more interesting tone to me. The puzzles are far expanded, which is neat, though I didn't love every new mechanic. The gels/cave section felt like it went on a bit long; I definitely prefer the shorter "futuristic" chambers in general. I'm less a fan of the unstructured bits in between where it's not always clear if there's even a puzzle to be solved or you're just walking the wrong way. When the right puzzle comes along though, it definitely hits.