Hi, everybody. So, this is the beginning of a line of stories based off the idea I had of a "Nintendo Cinematic Universe". My Metroid story will tie into this, as you'll see soon. Also, I'll be discontinuing my Pokemon Fire story, as I can't think of anything to do with it. Without any further ado, here we go!

Prologue: the Koopa Invasion

Princess Peach Toadstool stood on the balcony of her castle, looking over the small village below her. She smiled, knowing that the residents of the Mushroom Kingdom were safe. Hopefully, they'd always be safe, but she knew it wouldn't always be that way. A running sound made her turn around. It was her assistant, Toad. The small boy adjusted the mushroom cap on his head and looked at the princess.

"It's the princess of Sarasaland, your highness," he said. "She says it's urgent."

"Thank you, Toad," she replied, and smiled at him, making him blush. She walked down the stairs from her bedchambers to the large council room where she and the other rulers of the Mushroom Kingdom (there were seven in all) met and discussed topics about the nation. There was also a communication screen for when at least one member couldn't come. On the screen was the ruler of the Sarasaland Desert region, Daisy Toadstool, Peach's cousin. She was visibly afraid, and Peach wondered why.

"Daisy? What is it?" Peach asked, and Daisy's response was frantic.

"PEACH! THEY'RE COMING! THEY'VE GOT THE FULL ARMADA BEING USED AND-"

"Woah, woah! Daisy, calm down. Who is coming?"

Daisy took a deep breath and her answer caused Peach to freeze in terror.

"The Koopas! Their fleet of airships just passed over the desert from the Desolate Lands. I'm so sorry, we tried to stop them, and I think we took down a couple, but there's still quite a few of them coming."

"It's fine, Daisy. Thank you for letting me know. I'm going to have to let you go now. Goodbye."

She hung up, trying to stay calm, but it wasn't working. Toad walked up to her.

"Ma'am? What do we do?"

Peach turned to the boy.

"Sound the alarm and have the gate-guards activate the Power Star shields. We're on red alert!"

Toad ran to the front of the castle and alerted the guards. They in turn rang the message out to the rest of the kingdom:

"EVERYONE SECURE THEMSELVES IN THEIR HOMES. WE ARE BEING ATTACKED BY THE KOOPA ARMADA."

The guards of the gates surrounding the village activated the shields. A great bubble of Power Star energy enveloped it, impenetrable by even the strongest of weapons. The captain of the guard, Toad's father, had the soldiers prepare themselves by using the Flammuri flowers, nicknamed "Fire Flowers", which allowed them to throw balls of pure flame from their hands. The only problem was that the abilities of the Fire Flowers would be lost if the user was physically harmed. They gathered around the village near the gates, as to protect the town if the shields somehow failed.

Peach quickly made her way back to her chambers and turned to an area with three portraits of herself. She turned to the one on the right and pushed it aside, revealing a secret room with a slide that exited to a small corridor near the back of the kingdom. From here, she would meet up with Toad, who would escort her to the closest civilized area of the kingdom, the Great Mushroom City, where she would stay until help would arrive to help with the fight. As she traveled to her destination, she couldn't think of why this would happen. The Mushroom People had been in peace with the Koopas for many years. The only reason she could think as to why this would happen is that the heir of the kingdom has been chosen. This worried her. King Egdra Koopa, the old king, had died of an incurable disease two years prior, and the kingdom had been at war with itself. Now, it seems as if his son, Bowser Koopa, had gained the crown. This worried her. Bowser was a general in the Koopa Armada when it was at war with the southern regions of the Mushroom Kingdom. He was called "Bowser the Bloodthirsty", as he was ruthless and vicious in all of his battles. Worse, he openly practiced black magic on the soldiers he enslaved. This led to them being mutated into the Koopa Armada's foot soldiers, Goombas. They weren't the sharpest of soldiers, and many of the Mushroom People discovered that, since these creatures were only about two feet tall, could be easily stomped on, but they were still vicious and cruel.

She made it to the meeting point, and soon Toad came out of the basement door. He led her to the exit, which was concealed by a waterfall. They walked under it, and made it to the edge of the castle gates. As they were making their way out, they heard and felt an earth-shattering boom. Looking up, they saw the armada, a dozen wooden and metal airships with multiple cannons on each of them, firing upon the shield. The shields were holding up well, but the weaponry the airships were using was quite weak. Only cannonballs and Bullet Bill missiles, both of which were considered outdated. Relieved, Peach turned to Toad.

"We may not have to leave after all, Toad. I highly doubt they'll penetrate the-"

All of a sudden, she noticed that the largest of the airships, which she assumed was Bowser's flagship, was creating a large ball of dark energy. She felt her body tremble. It was a Shadow Bomb, which was known far and wide as a most powerful black magic spell.

"Toad, run!"

The two sprinted as fast as they could as the energy ball was released. It hit the shield, and easily broke it, with shards of yellow energy dissipating as it fell to the ground. Small pods fell to the ground, and out of them came Goombas and the Koopa Troopas, four foot tall turtle-like creatures that were often equipped with nothing but their shell, which were fitted with either green or red steel and could be used by the Koopas as both a shield and a weapon, as they could duck inside them and send themselves flying at targets. There were also what were known as Hammer Bros. These were slightly larger Koopas that were equipped with strong armor and hammers that could easily damage almost anything they were thrown at. All of these soldiers moved and decimated the village, and although the guards kept up a good defense, they were also slain. Toad whimpered as he watched his father help his mother escape, but they were both hit by an onslaught of hammers. Peach clutched onto the boy, giving him a strong hug. They both knew it was too late, and they knew what would happen to those who survived, so they ran to the Mushla Forest, which bordered the Great Mushroom City. They made it only a few hundred yards in, however, when a group of Koopa Troopas that were combing the woods for survivors discovered them. They held them both while they called their leader. Soon, a large white bowl-shaped vehicle flew down to them. What jumped out of it was the monster known as Bowser. As with most of the Royal Koopa family, he was much larger than most Koopas, standing at ten feet tall and being three times the width of a human. His yellow scaly body was protected by an emerald-green shell covered with large spikes. His head was sporting a fiery red mane and small horns, and he looked at Peach with glaring scarlet eyes, his gaping maw releasing a large, guttural laugh.

"It's a pleasure to finally meet you, Princess Peach," he said with a growling, deep voice.

"Bowser. Allow me to give you the feelings I have of you coming to my kingdom and destroying my people."

She spit on him, and for a moment he gained an aggressive expression, the inside of his mouth glowing bright orange, but he then returned to his laugh.

"A girl with spunk! I like that," he snorted, and then he took a large finger and placed it on her jaw, gently pushing her chin up.

"Oh, Princess. I'm going to have so much fun destroying your entire kingdom"

He picked her up and hefted her into the flying vehicle.

"Now, seeing as your quite possibly the only hope this kingdom has, I'll be keeping you in my fortress while my forces burn down all that your ancestors created.

"And no one will be able to stop me."

Bowser activated his "Koopa Clown Car" and flew up to his flagship. He then ordered for only his ship to turn back to the Desolate Lands and for the rest of the fleet to continue attacking the Mushroom Kingdom. However, unknown to both him and the Koopas who'd found Peach, Toad had silently escaped unnoticed. He ran for the Great Mushroom City with an order written by the princess:

"Toad,

Go to the city and find two brothers. These brothers have been chosen by destiny to defeat Bowser and his forces. One had even bested the tyrant as an infant! You will be able to find them by the star amulets they were. They are plumbers under the name "Mario Bros." Find them before it's too late.

Princess Toadstool"

A/N: After finishing this chapter, I realized there were a couple things to clear up. This story will adapt the first and third Super Mario Bros. games, with some creative adaptively. Also, I may redo the entire Metroid: Origins story under the simple name "Metroid". Tell me what you guys think, and as always, constructive criticism is appreciated. Happy holidays, everybody!