Disney Infinity Ultimate is the fourth and FINAL installment in the ever-growing series. It is set to bring the Disney Infinity character number to 600 before finally ending (as of now) the franchise.
Disney Infinity Ultimate features 25 Play Sets. They are released in waves divided by numbers.
Disney Parks Play Set
Avengers: Infinity War Play Set
Solo Play Set
Toy Story 4 Play Set
Mickey and Friends Play Set
The Muppets Play Set