Ameba Pico: Meet the Dinosaur

In Pico Guidebook, there is a mission to meet a dinosaur which lived at jurassic time. There's tips to call the dinosaur out.

Dinosaur

1. Go to Stone Age.
2. Buy the Volcano Dance at Shop. (see the picture)
3. Invite 4 people (including you) to sit on the bench.

4. Then, they have to dance the Volcano Dance on the bench.
5. And see what happens, the big dinosaur appear!