The Gold Box deal of the day over at Amazon today is the standard edition of Disney Epic Mickey for the Nintendo Wii for only $29.99 (that’s 40% off the list price of $49.99).

Note, this sale is valid only for today, Tuesday, January 18, 2011, until midnight PST while supplies last.

Also, if you purchase Disney Epic Mickey: Prima Official Game Guide (currently on sale for $11.99), you can get the standard edition of Disney Epic Mickey at an additional 5% off. See the “Best Value” section of the product page to learn more about this discount.

From the product page:

– Use paint and paint thinner to change the world, interact with friends and enemies and solve challenges
– Choose the best path to become an epic hero because “Playstyle Matters” and choices will change the outcome of the game
– Explore and solve challenges in an alternate Disney world ruled by Oswald the Lucky Rabbit, Walt Disney’s first cartoon star
– Travel between lands in Wasteland through classic platforming levels inspired by animated films and shorts
– Experience an innovative mix of platforming, action-adventure and light role playing game elements

Disney Epic Mickey is an action-adventure platforming game for Wiiâ„¢ console that sends Mickey Mouse on an epic journey of creativity and discovery. As Mickey, the player is propelled into Wasteland, an alternate world made up of Disney’s forgotten creative efforts, and is given the power to wield paint and paint thinner to dynamically change the world while determining Mickey’s path to becoming an epic hero. Through the use of this unique paint and paint thinner, the key components of animation and Mickey’s tools for impacting his world, players will have the ability to shape how the story unfolds as they discover the concept of “Playstyle Matters” – an innovative style of gameplay created by Disney Interactive Studios’ Junction Point, led by industry luminary Warren Spector, where players creatively tackle different challenges in the world to explore all the possibilities and storylines – but with consequences for their chosen actions.