It's a serious case of mistaken identity when a Giant Birdo thinks Toad is her missing baby and tries to claim him as her own.

There's a rumble in the Old West when Koopa the Kid takes the Princess as his prisoner and brands Mario and Luigi as wanted outlaws.

In a twist on the Camelot legend, Mario frees a golden toilet plunger from an enchanted sink with help from a wizard named Mervin.

Mario and Luigi hitch a ride on a magic carpet to stop a determined King Koopa from adding the Princess to his ever-growing harem.

When Captain Koopa takes the Princess prisoner aboard his sidewheeler, Mario and Luigi don disguises as riverboat gamblers to rescue her.

The evil Emperor Augustus Septemberus Octoberus Koopa lures Mario and Luigi into a trap with the promise of a spaghetti dinner benefit.

It's an Italian twist on a classic fairy tale when Mario climbs a stalk grown from magic garbanzo beans and does battle with giant-sized Koopa.

Mario finds himself fending off unwanted advances when the gluttonous Queen of Rotundaland downs a love potion by mistake.

With Toad's life hanging in the balance, Mario and Luigi enter a BMX bike race that's got Koopa's evil fingerprints all over it.

Mario and Luigi have a tiny problem on their hands when Koopa mistakenly turns the Princess into a baby via the Fountain of Youth.

When Koopa takes over Planet Quirk and forces the natives into slavery, it's up to Mario and Luigi to set them free.

The Princess is in shackles once again when Long John Koopa takes her as his prisoner, forcing Mario and Luigi into a pair of pirate disguises.

There's trouble of epic proportions when Koopa turns himself into a half-robot monster -- with a little help from a reluctant Dr. Nerdnick.

Mario and Luigi steel themselves for a spooky adventure when Count Koopula makes plans to turn the Princess into a marinara-loving vampire.

A heated search for Sheldon the Witch Doctor takes Mario, Luigi, Toad and the Princess into the wilds of the Ama-Zone jungle.

Mario and Luigi dive beneath the surface in an undersea adventure to help the Mermushrooms free their captured King Neptune from Koopa's clutches.

Mario and Luigi come to the aid of the mighty Hercufleas when King Koopa steals his Great Balls of Fire.

After sneaking a bite of Super Sushi, Koopa grows into a towering monster named Koop-zilla and sets out to destroy Sayonara.

It's Mario and Luigi to the rescue when Koopa stirs tensions between once-warring families to keep Romero and Joliet from getting married.

Poor Princess Toadstool's in danger again when Koopa kidnaps the Fire God of Lavalava and strong-arms the natives into human sacrifice.

With Mario and Luigi poised to go back home to Brooklyn, Koopa once again takes the Princess prisoner, forcing them to stay.

Mario and Luigi are on the case when the evil Professor Koopa-arity takes crime-solver extraordinaire Herlock Sholmes as his own private prisoner.

Mario and Luigi work with the Hooded Robin to look for stolen gold coins in Sharewood Forest and thwart the greedy Sheriff of Koopingham.

Mario and Luigi must help the Mushroom Colonists stay afloat when the evil King Koopa sucks all the spaghetti sauce out of Car Land.

Armed with a magic flute that charms the children of Pastaland, evil King Koopa lures kids to his castle. But can Mario and Luigi change his tune?

With Koopa holding the King of Rapland hostage, Mario and Luigi must speak in rhythmic rhyme to set him free.

It's up to Mario and Luigi to go undercover when Koopa takes out James Blond, the Princess's most important secret agent.

Mario and Luigi take to the skies in a flying carpet biplane to bring down Red Baron Koopa and the nefarious sky turtle Lakatu.

With a little bit of luck and a leprechaun on their side, Mario and Luigi scour Shamrock Land to recover a stolen pot of gold .

Koopa pressures the Princess into marriage by threatening to turn the Marios into stone. But can he be stopped before she's forced to say, "I do"?

With El Desertland under attack from Capitan El Koopa, Mario and Luigi slip on masked disguises and become the heroes Zero and Zero Plus One.

No one's safe -- including the Mushroom People -- with Captain Koopa-Nemo patrolling the waters of Oceanworld in his souped-up submarine.

With Redcoat Koopa's army lurking on the other side of the Delawide, it's up to Mario and Luigi to help General George Washingtoad get cross safely.

Megalomaniacal scientist Dr. Koopenstein sets out to steal Mario and Luigi's brains, with plans to build the ultimate monster.

It's a prehistoric problem of delicious proportions when Caveman Alley Koopa poisons Mario, and the only way to save him is to bake a pizza.

Crime reigns on the mean streets of Mobsterland, where the evil gangster Al Koopone lords over the quaking residents of the city.

With the Princess locked away on King Koopa's island fortress, the only way in for Mario and Luigi is via a wooden Trojan Koopa.

Armed with the ancient art of Plumb-Fu, Mario and Luigi go up against Karate Koopa and his evil squad of Ninja Ninjiis.

With Toad and the Princess in tow, Mario and Luigi travel to Sock Hop Land, where they learn that music royalty Elvin Parsley is in trouble.

Christmas is in serious trouble when the scroogey Koopa Claus sets out to stop it. But can Mario and Luigi fight back with holiday cheer?

Deep among the sands of Desertland, the evil Koop-Tut is holding the Desertlanders hostage with a strict set of rules: the Ten Koopmandments.

With help from mushroom Indian scout Pronto, Mario saddles up to thwart Billy the Koopa and free his friends from their Wild West imprisonment.

Mario and Luigi think they've hit the mother lode ... until Klaimjump Koopa decides to pounce on their gold.

When Mario gets a foggy head in the thick of the jungle, a pair of caring apes take him under their wing and raise him as "Marzan.

Mario and Luigi drop in to set the Outback Mushroom People free when Kangaroo Koopa takes over Down Under Land with his squad of evil crocodiles.

The memories come flooding back when Mario and Luigi recount their younger days at the Brooklyn Academy of Plumbing.

Mario and Luigi get a taste of what it's like to be tiny when Toad douses them with a potion that shrinks them down to super-small size.

When Mario and Luigi go back to Brooklyn, they learn that Koopa has named the city Kooplyn -- and put himself in charge.

Indiana Mario heads to Jungleland on an epic quest to find a priceless gold statue known as the Lost Mushroom.

In a space-based plot a la Star Wars, Mario and Luigi go up against Darth Koopa and end up imprisoned in the Intergalactic Insinkerator.

No one's ever escaped from Koopa's impenetrable Koopatraz prison ... until Mario, Luigi, Toad and the Princess give it a try.

In true big, bad wolf style, Koopa preys on the Princess when the Marios travel to Winterland to visit the Princess's grandmother.