Software providers for games have expanded their library for sweepstakes casinos to keep up with player demands. Like a typical online casino for cash, slots are the lion’s share of a sweeps casino library. However, providers offer more games for sweepstakes players besides slots to attract more players. Sweepstakes casinos are online sites that allow people to enjoy casino-style games for free using a promotional sweepstakes model instead of real-money gambling. Players get two types of virtual currency, one that allows free gameplay and the other that can also be redeemed for cash or other prizes. Because this model does not involve direct wagers, the best free online casinos can operate in more states than standard online casinos.   Sweepstakes casinos are not considered legal or illegal. They operate in a legal grey area, and players are not prosecuted for using them. Instead of being regulated as gambling sites, sweepstakes casinos rely on promotional sweepstakes laws to offer prize-based gameplay.