-The other games I would like to find were all similar to Contra. I can remember a few levels and those games were all similar so they could a sequel. In one of those games, the first level is facing soldier enemies and at the end you have to fight a mighty soldier boss. As I said, this games were action games, just like contra, with shotting, jumping, etc...
The other game of this "sequel" I can remember a very few things, I can remember a "transparent" or white little boat you have to take to arrive at a base where the boss lives in. the perspective of this game was somekind of "upper camera" in which you can see the final boss angry, with two guns shooting at you. You have to defeat that boss.
The fifth game is another "street fighting" game where you are a strong fighter and you have to fight enemies by waves, there are usually normal enemies and you can fight using punches, kicks or other moves to throw your enemies away. I can remember waves in which the enemies were stronger, they looked just like "The Thing" from Fantastic Four (xD), and those enemies were harder to kill. I remember one stage where you had to fight those enemies and you could throw them at a conveyor beld so they fell into a whole and die.
I hope you people can help me out with these games!