Actually, no, this started after i learned about CashCrazed's UMB but before I heard about anyone elses. It is highly inspired by CC's UMB, actually. It is more-or-less a (you knew it) Mario Bros. clone. It also, much like CC's UMB, has an Adventure mode, but it is set up differently.
The game is completely based around the story mode (but you can unlock Arcarde and "Super" Arcade later), which is split into 5 chapters (two hidden). Heres the story:
One day in the Mushroom Kingdom, Mario got sick of saving Princess Peach and everyone else by himself (with the occasional help of Luigi). Bowser was marching his army directly towards Peach's castle, and had requested to see Mario. Mario left the Mushroom Kingdom and went back to the normal world. Soon after getting there, he fell asleep. When he woke up, he was under the impression that he had been on drugs the whole time. A voice cried his name. It was Luigi. Mario turned to see a fat man with an owl head, and his assistant, a guy in purple with a Bullet Bill for a head, holding Luigi hostage. Now Mario is chasing them trying to get Luigi back...
CHAPTERS:
PROLOUGE: The End of Mario
Luigi is kidnapped by Arch0wl and BulletBill, and you kill Arch0wl. BulletBill gets away.
PHASES: 1 (0)
BOSSES: 1 (Arch0wl)
AREAS: 2 (Sewer Matainance, Old Subway Station (Boss Fight)
CHAPTER 1: Pursuit
Mario and Luigi are hot on the trail of BB, but he has plenty of suprizes for them...
PHASES: 15 (1-15)
BOSSES: 2 (BulletBill, BulletBill)
AREAS: 4 (Jungle, Abandoned Building, Elevator Shaft (wheefun!), Rooftop (bossfight)
CHAPTER 2: Siege
Mario finds BB's fortress, and is convinced that someone else is behind all of this...
PHASES: 15 (16-30)
BOSSES: 2 (?????, BulletBill (final))
CHAPTER 3: The Death of a Hero
The true villain is revealed... and Mario takes him to the bar and buys him a cold one.
PHASES: 15 (31-45)
BOSSES: 2 (?????, The Ying Yang Twins)
CHAPTER 4: Rebelion
A small group of rebels with Kalashnikovs rebel against the Mushroom Kingdom... and the leader is the last person Mario would expect.
PHASES: 15 (46-60)
BOSSES: 2 (Mecha Mario, Arch0wl + Clones (final))
CHAPTER 5: The Aftermath
Mario plans on taking a nice break after all of his hard work, but he is given the task of cleaning up the remains of his foes.
PHASES: 15 (61-75)
BOSSES: 1 (MechaMario (final))
If I ever post a link to this game, be warned that IT CONTAINS PROFANITY. Yes. And not just because the unedited Salt Shaker makes an appearance.
Anyway... progress is about 10%. The game is still freshly coated in bugs, and I had to remove pixel-precise collision because Mario could hang from his nose on the platforms. Most of the music is taken from various games, as is the graphics (I did the blocks myself though!). I can't think of any more to say... I need to go add some more to Chapter 1...