In March 2010, Amuro won the "Best Asian Artist" award at the World Music Awards in Monaco; there, she performed her track "Hide & Seek" from her album Play. On July 28, she released her double A-side singles "Break It" and "Get Myself Back", which performed well on several record charts in Japan. Furthermore, she released the live DVD for her Past < Future tour on December 15, which reached the top spot on the Oricon DVD charts and shifted over 100,000 copies.  On April 27, 2011, Amuro published her second collaboration effort Checkmate!. Her first musical release of the year, the record featured nine collaborative tracks that she had participated with throughout her career, and also released four new recordings to promote it; "Wonder Woman", "Make It Happen", "Unusual" and "#1's". The album was a commercial success, reaching the top spot on Oricon and distributed over 500,000 units in Japan. Three months later, she released her first ever triple A-side singles, "Naked/Fight Together/Tempest". Although it reached number two on the Oricon Singles Chart, "Fight Together" was used as the official theme song for the Japanese anime series One Piece, and achieved better sales through digital stores; it was certified Platinum by RIAJ.  At the end of July that same year, Amuro conducted her first arena tour titled Live Style, which commemorated her 20th anniversary in the music business; additionally, the tour was to promote her Checkmate! album and some new material taken from her then-upcoming studio record. "Sit! Stay! Wait! Down!" and "Love Story" were the next A-side singles from her studio album, and both premiered on December 7, 2011. Though the physical release exceeded 100,000 units in Japan, the latter track shifted over three million digital copies throughout Japan, one of her highest-selling singles to date. The single also featured two unreleased tracks; "Higher" and "Airigatou". The former track made an appearance on her Live Style tour, whereas the latter recording was made available as a free download on her Facebook page.  The final singles, "Go Round/Yeah-Oh!", were released in late March 2012, and continued the 100,000 sales streak in Japan. In April, the singer confirmed the release of her studio album Uncontrolled, which was scheduled for June 27, 2012. The album proved to be commercially successful, reaching the top spot on the Oricon Albums Chart and shifted 500,000 units throughout Japan. Uncontrolled also gave her the highest first-week sales of the year, and her 10th overall number one in the region. On September 16, Amuro was scheduled to host a special concert in her hometown Okinawa, commemorating her 20th anniversary in the music business. However, due to a typhoon warning in the region, this was cancelled and never re-scheduled. After debuting her first digital single "Damage" on October 31, she finished the year by starting her 5 Major Dome tours in Japan, which resulted in being the highest-attended dome tour by a female Japanese artist.

Answer this question "What was her most successful album or single?" by extracting the answer from the text above.
The final singles, "Go Round/Yeah-Oh!", were released in late March 2012, and continued the 100,000 sales streak in