When someone plays a video game, they are challenged mentally with a problem. Through playing they will discover many different ways to solve problems they will come across. Often, players will find that they require these skills later on in the game as well, and thus are required to maintain and hone their skills for later use. Video games typically provide instant rewards for succeeding in solving a problem. This is in contrast to classroom environments where students wait for graded tests and are only rewarded occasionally with report cards to report their progress. Video games can instantly tell a student of failure or success and often this can be used to develop skills along the way. Thus, video games can be used as an alternative to a classroom setting, while still maintaining levels of difficulty that foster learning in a gamer.