In 5- to 6-quart slow cooker, lightly mix cereal, crackers, pretzels and almonds.
In small microwavable bowl, microwave butter on High 30 to 45 seconds until melted. Stir in brown sugar, soy sauce, curry powder and garlic powder. Pour over cereal mixture, stirring gently until evenly coated.
Cook uncovered on Low setting 3 to 4 hours (or on High setting 2 to 2 1/2 hours), stirring every 30 minutes. If desired, keep snack mix warm on Low setting during serving.