Up to seven
B-Robo Kabutack, Monster Puppet Show Godziban and Moero!! Robocon are gentle and funny.
Eight to eleven
Kaizoku Sentai Gokaiger, Ultraman Orb and Kamen Rider Fourze are lively and colourful.
Twelve and up
Kamen Rider Kuuga, Chōjin Sentai Jetman and Kamen Rider Ryuki have bigger, deeper stories.