LuNiney has been working on Super Mario ReMaker for a while now, but just recently released a trailer for the Super Mario Maker fan project. Spotted by Kotaku, the video shows off actual gameplay in addition to some of the building and editing tools.
Nintendo uses their software to sell their own hardware, making a PC version of their level bulder extremely unlikely, but most players who have at least dabbled in Super Mario Maker would agree that the game would match well with the robust editing/input options on PC. Those looking to take advantage of the mouse and keyboard to create their own classic Super Mario levels can try the ReMaker demo now.
In a post on their website, LuNiney answered a long list of questions. They also explained what’s available in the demo:
Most elements from the original SMB1 + some Super Mario Maker exclusives
A few elements from SMB2J (The Lost Levels), SMB Deluxe, and Mario Forever
Full Editor with ability to Save/Load
9 Course Themes (Ground, Underground, Underwater, Castle, Ghost House, Ice, Desert, Athletic and Night) + Customizable Theme
All of the SMB1 style powerups (Mushroom, Fire Flower, Costume Mushroom, Weird Mario)
Stack enemies on each other (VERY glitchy at the moment)
Put enemies on blocks
Costume Mushroom with 100% customizable costumes (with optional ability of shooting projectiles)
Hotkeys for placing objects (in full version there will be a menu)
"Shaking Elements" (Right Click)
Course Bot/World to play courses and special modes (i.e. You VS Boo from SMBDX)
Interactive Credits Screen
Super Mario Maker itself has been met with critical acclaim so far, and has even been featured on a few game of the year lists.