sentences:  Game progress is saved at a checkpoint after completing a "chamber" of seven levels before the players' 10 lives are exhausted.If the players complete any level without losing any lives, the players earn a "gold star" for that level.In subsequent games, any time the player goes through that chamber, the game will automatically skip past any level that has a gold star, making it more likely the player will be able to finish the chamber before his 10 lives are exhausted.