Age group for? Bad for adults?
Seems like this movie is made for those (under 40) whom grew up with these transformer figures.
I was later, or earlier, graduating HS in 84. Good for you younger folks to play with the figures & like this movie.
I had no interest from the get go. Despite that, I indulged myself in the movie & did't like it. I would rate it 4, but didn't, partly because I didn't watch the full piece of crap.
Happiness galore for those whom like it.