Coaster is a simulator which allowsplayers to build rollercoasters. The player can ride pre-made or custom coasters and design new coasters from scratch or existing coasters. After each ride of the coaster, the player is presented with a score. The score is given based on the judgments of six evaluators. Each evaluator has a separate, distinct criterion, which determines score of the coaster. The player can fulfill criteria, leading to a higher score, by designing the coaster towards to the evaluators' specificneeds. The player can also look the ride statistics by reviewing the "signature".