Developers: Nintendo R&D1,
Intelligent Systems Publisher:
Nintendo Platform:
SNES Released in JP: July 14, 1992 Released in US: August 1, 1992 Released in EU: December 10, 1992
There's a set of rather useful features that are, for some reason, disabled by default. However, they can be unlocked via a simple "code" on the title screen. Click on the "N" in MARIOPAINT™ to start the staff roll, and when "PROGRAMMER NORIAKI TERAMOTO" appears hold the right button and click the "N" again. Congratulations, you've unlocked the power of the right mouse button!
The list of (currently known) hidden features are as follows:
Right-clicking anywhere on the screen will activate Undodog (with a few exceptions).
Right-clicking on the canvas in the Stamp Editor will sample the pixel color underneath the cursor.
Four new rotation options are available in addition to the old horizontal/vertical flip options (see screenshot).
Pressing L + R + Start + Select on Controller 2 will reset the game (code will need to be entered again).
(Source: Rusty)
Controller 2 Codes
There are a couple of marginally interesting features accessed by plugging a controller into port 2.
Start Game Instantly
Pressing A + B + Start will start the game without having to click on Mario.
View Saved Data
Pressing A + B + Select will (after a short delay) load and display the currently saved drawing, animation, and music. If nothing has been saved, "NO SAVE DATA" will be displayed instead. Reset the console to return to the title screen.
(Source: Mattrizzle)
Unused Coloring Book Icon
A little bear icon is all that's left of a fifth, unimplemented coloring book picture. As the game's graphics are uncompressed and thus take up a significant portion of the ROM, the developers likely ran out of space and were forced to ditch it.
"Gnat Attack" Trophies
The mini-game Gnat Attack has a series of "trophies" that are awarded each time you beat the game. Although none of them are technically "unused", it's unlikely that most players bothered (or were able) to beat the game 15 times in a row. Here's the whole set for your viewing pleasure.
R Letter
Clicking on the R letter on the title letters that spell MARIO PAINT will play what sounds like a baby laughing. If the sample is played backwards and slowed down by 50%, it is revealed to say "Nintendo!"
(Source: nensondubois)
Error Handler
This isn't necessarily unused, but you're likely to never see it without external hacking. If your regular and animation canvases are sufficiently large and detailed that the game cannot compress them into the cartridge's 32kb of SRAM, the Save Robot will actually throw up a "DATA OVER FLOW" error, complete with a unique animation of smoke pouring out of its "ears" with a looping explosion sound effect.
Updated versions of the game were distributed via the Satellaview service in Japan, which support standard controllers as well as the mouse. The Yuushou Naizou version also adds the picture "Dreaming of the Moon" by Mizota Hiroko of Tokyo, the winner of a contest associated with Mario Paint BS-ban.
This game has a prototype article
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