Jurassic Boy 2 is a blatent ripoff of the Sonic formula, and doesn't even try to hide it.

The story goes:

In the year 2193, "Dinosaur" becomes a popular subject again. Scientists all work for making dinosaur revive.

Nevertheless, they still lack of a special gene. This causes the dinosaurs they cultivate are all incomplete.

Many countries then intend to buy dinosaurian fossil at high prices in order to get the gene.
But it seems that it's not so easy.

No one can do anything to this problem until Dr. Crachi invents a "Time Space" machine in the year 2197.

Thanks to NEScapades for this information

The game was created by a company called 'Sachen', who live off little knock off games like this. You follow 'Chen' the Dinosaur as you run across bridges, over spikes, and around loop-de-loops, just like Sonic.

The game however, is very buggy, not just due to the fact that it's a shoddy game, but it's also a port of a NES game by the same name. There is no 'Jurassic Boy 1', the 2 was added to be like 'Sonic 2'.

For a Game Boy Colour game, the gameplay is very fast, almost like a Sonic game, and in comparison to other GBC hacks isn't half bad. Most of the game finds you just pressing the Jump button constantly and flying through the air until you reach the next bit of land.

There are boss levels, the first boss is a enlarged version of a Bee that you see throughout the level.

At the end of the level you pass a sign post, just like the Sonic games.

The second level takes you into a underground Bone level, which introduces Springs.

The game is supposedly completable, but with very little to no 'ending'.