Besides Nintendo's own successes in various platform games, the growth of indie games in the late 2000s and into the 2010s helps to spur the platform game market. A common element of these new indie platform games was stronger focus on narrative and developing innovative elements not present in prior platform titles.[1] In 2009, independent developer Frozenbyte released Trine, a 2.5D platform game that mixed traditional elements with more modern physics puzzles. The game proved to be a commercial success, eventually selling more than 1.1 million copies.