Slot machines are the most popular form of casino entertainment, both at land-based and online casinos. The main categories of online slot machines are classic 3-reel slots, 5-reel and 7-reel video slots, interactive i-Slots, and progressive jackpots. This article summarizes 5 online slot machines that have Christmas and winter themes, including Cabin Fever, Ho Ho Ho, Jingle Bells, Rudolph’s Revenge, and Santa Paws.