I'm only writing this review because gamespot is just as buggy as this game and I can't rate it properly.
The gameplay is fine, even though their 2.5D was better than 3D. It's fun in co-op, but holy hell, is this game bugged or what. I didn't even mind the abrupt ending (let's face it, the plot was nonexistent) or short length but the connectivity issues were so frustrating. Or the fact that game resetted my progress after I beat it (there are some bonus levels you can check out but the map got wiped out).
I understand the developers' time was cut short due to overextending budget but they did make Trine 4. They could go back and fix at least some of the bugs plaguing Trine 3. But they didn't. They don't care about this game and why should you?