Prototype

Final

In the prototype, the sea doesn't have a glowing effect, something the final does have.

Prototype

Final

A ninja in the prototype was replaced with a flamethrower soldier in the final. Amusingly neither of them can hurt you if you just stand on the container next to them.

Prototype

Final

This section is far easier in the prototype, as it is missing a ton of enemies added for the final. In the final, there are many ninjas added, who leap out of the sea.

Prototype

Final

There are two item boxes here in the prototype, one contains a 20 shuriken item, the other has an extra life. For the final, there is only one item box, and it contains a small life item.

Prototype

Final

Near the end of the first section, there are two ninjas on the last platform in the prototype. In the final, there is one ninja and one flamethrower soldier.

Prototype

Final

In the prototype, the lights above the doors in the background of the ship don't glow, but in the final, they do.

Prototype

Final

A grenade tossing soldier was added to this part in the final.

Prototype

Final

These items were swapped around for the final. You can also see some very slight changes to the background -check the pipes to the right.

Prototype

Final

This section was slightly changed for the final, as the missile container was moved to the left a little, and a grenade throwing soldier replaced what was an item box in the prototype (the box contains a bomb).

Prototype

Final

The electrified floor doesn't glow in the prototype, but does in the final.

Prototype

Final

What was an extra life item in the prototype became an extra ninjitsu item for the final.

Prototype

Final

This section was changed slightly for the final, as one of the platforms was made bigger whilst another was removed. The railing some soldiers are on was also moved up slightly.

Prototype

Final

The part right near the exit was also changed, as the final added a few extra platforms that the prototype doesn't have.

Prototype

Final

The boss doesn't work correctly yet in the prototype, as it can't hurt you and you can't hurt it. The dinosaur will just do a few attacks, then the round ends. In the final it works correctly, and was given brighter eyes. In the prototype, you can't jump up through the platforms at the far left and right of the screen, something you can do in the final.