This is a side-scrolling type action game.

The player controls Korosuke and aims to clear a stage by jumping and slashing only.

Each stage consists of an action part and a mini-game part, and the score of the stage is the sum of the remaining HP at the time of clearing the action part and the score of the mini-game.

The ending of the game changes when the average score of all stages reaches 100.

An Edo-era inventor, Kiteretsusai, failed to experiment with a time machine and summoned dinosaurs from the Jurassic period to Edo!

Kiteretsusai built a giant robot to capture the dinosaur, but it was kidnapped by villains calling themselves the "Black Ship Alien Army!

Korosuke sets out to rescue Kiteretsusai and capture the dinosaur!

It's the beginning of a great adventure!