This game has a very solid, unique mechanic that works really well - objects don't move unless they're close to you. This is a great mechanic because it creates interesting dynamics and lets you take the puzzles at your own pace. The gravity shifting also synergies really well with the time manipulation.
While I like those mechanics, the game suffers from poor pacing and uninspiring level design. The difficulty curve could be more consistent, and some things could be explained a bit more, but my biggest gripe pacing wise was the time cube thrown in at the last section. It's essentially a second you which only moves through gravity, and it's another mechanic I really enjoy, but it comes in too late to be used very much.
The game boasts 100+ levels, but here's a rough breakdown of them:
~20% I'd call easy enough to be filler levels
~40% are more
filler levels which are trivial just to pass, but also have collectibles (Example)
~25% solid, enjoyable puzzles
~15% unclear, at times frustrating levels
The story didn't catch my attention and I didn't even pay attention to it.
I want to reccoment this game because I enjoy its foundation, but its bland level design and meh execution makes me hesitate to suggest it. At the very least, just know what you're getting into and it'll be fine. 75/100