Ricochet: Lost Worlds was developed by Reflexive Entertainment and is the sequel to Ricochet Xtreme. It features several new bricks, power-ups and background art. It also has the new "ring" feature, where you try to collect all the rings on each level. If you collect all five rings on every level, you become "Ring Master" and get the trophy at the end of the game. It is possible to beat the game without getting every ring, but it is less challenging. (wikipedia.org)