It's a great game, similar in feel to classic Mario platformers (but in 3D). The learning curve is gentle (maybe a little too gentle) and if you get hooked then finishing the game is possible (I did!), but completing the game is a little harder. Every level has 10 awards to complete that are impossible to do all in one game .. .. .. so you need to replay every level at least once to get all the awards. Extra mini levels are unlocked from each main level that provide a specific time based challenge .. .. .. .. the music is great .. .. .. there is plenty of humour too.
The downsides are that there are no save points in a level. Finish or don't finish and that can take up to 90 mins . Also, at times, the controls aren't perfect and the camera could have been a bit better programmed but they aren't major distractions from the game itself, just momentary annoyances.
The metacritic score is about right .. .. .. .. it's a very good game but there's room to improve when they release de Blob 2. I liked it, I still like it and I'd recommend it.