Super Mario Bros. 3X

Super Mario Bros. 3X is a Romhack made by the SMWCentral user Koyuki. It blends the gameplay of Super Mario World with the graphics and feel of Super Mario Bros 3. - This game provides examples of:
 * All Deserts Have Cacti: Desert World.
 * Big Boo's Haunt: The Ghost Houses in Giant Island and Yoshi's island.
 * Bat Out of Hell: The Swoopers; there is a level in Bowser's Land dedicated to them called Swooper Cave.
 * Battleship Raid: Wendy's Battleship, Roy's Ship, Bowser's Land 3, Bowser's Land 4 and Crappy Ship.
 * Blackout Basement: Dark Cave.
 * Bubbly Clouds: The Sky.
 * Breath Weapon: Mini Rhinos, Fire Chomps and Venus Fire Traps. There's even a blue variant of the Venus Fire Trap that can rapid-firespit their fireballs.
 * Cartoon Bomb: Bob-ombs.
 * Convection Schmonvection: Lemmy's Castle is frozen over, yet the ice does not melt when it is placed next to the lava pits in said castle. Magma Castle qualifies because it is a tribute to Super Mario Bros 3.
 * Cranium Ride: Parabeetles and Bowling Goonies.
 * Dem Bones: Dry Bones.
 * Eenie Meenie Miny Moai: Desert World 4.
 * Everything's Better With Penguins: The Bumpty and Mace Penguin.
 * Fan Sequel: To Super Mario Bros. 3.
 * Fungus Humongous: The Sky 5 and Yoshi's Island 3, which combines it with Underground Level.
 * It's All Upstairs From Here: The Switch Tower in Bowser's Land.
 * Game Mod: Of Super Mario World.
 * Giant Mook: Mostly on Giant Island.
 * Green Hill Zone: Grassland.
 * The Goomba: Shy Guys and Goombas.
 * Hailfire Peaks: Lemmy's Castle.
 * Invincible Minor Minion: Firebars, Podoboos, Rotodiscs, Tap-taps, Bumpties and Chain Chomps.
 * Lava Is Boiling Kool Aid: In Bowser's Land 4, Mario must press P-Switches to turn the lava into swimmable water.
 * Lost Woods: Yoshi's Island 5.
 * Macro Zone: Giant Island.
 * Magic Wand: The Magikoopas and a few of the Koopa Kids.
 * Man-Eating Plant: The Piranha Plant.
 * Mordor: Bowser's Land.
 * Mutually Exclusive Powerups: Fire Flower and Raccoon Leaf.
 * Night of the Living Mooks: Dry Bones, Boos, Bony Beetles and Fishbones.
 * One-Hit Kill: Boss Bass and the Giant Chomps in Yoshi's Island 3.
 * Palmtree Panic: Seaside.
 * Poison Mushroom
 * Ring Out Boss: Fake Bowser, Bowser and Big Bully.
 * Rise to The Challenge: Seaside 4 because of Boss Bass.
 * Smashing Hallway Traps of Doom: Thwomps.
 * Shifting Sand Land: Desert World.
 * Storming the Castle: Except in Seaside and The Sky.
 * The Spiny: Spiny, Buzzy Beetle, Spike Tops, Wild Piranha Plants, Boss Bass and Bony Beetles.
 * Took a Level In Badass: The Angry Sun is back, but you can't use any of your tricks in Super Mario Bros. 3 to beat him.
 * Transformation Trinket: Super Mushroom, Fire Flower and Super Leaf.
 * Under the Sea: Seaside 3.
 * Unique Enemy: The Eenie Meenie Miny Moai in Desert World 4, the Rex in Yoshi's Island 1, Giant Chomps in Yoshi's Island 3, Wiggler in Yoshi's Island 5
 * When It Rains It Pours: Seaside 6.
 * Wrap Around: ??? Castle and the Ghost House in Yoshi's Island.