Critters is obviously a rip-off of Gremlins. This indie film studio called New Line Entertainment saw how much money Gremlins made and said "hey, let's make that, it'll help us make more money and we don't have to rely on Freddy Krueger."
In spite of the fact this is a blatant Gremlins rip-off, I dig Critters. It does some really interesting things like having bounty hunters arrive that have been trying to track down the Crites and having some fun gore effects, something that Gremlins does lack.
I really like how the Scott Grimes' character is a troublemaker kid but it's due to his troublemaker antics, that he is able to fight the Crites. Overall, Critters is just a fun B-movie. If you enjoy schlocky B-movies, I would highly recommend Critters, just don't go into it expecting the greatest movie of all time.