It could be a while before players get their hands on Kingdom Hearts 4, but this impending wait hasn't done much to stop hype from building within the series' fanbase. Though Kingdom Hearts 3 has its issues, it's generally seen as a solid addition to the franchise, and its ending tees up Kingdom Hearts 4 in interesting ways, setting the stage for the next chapter in Sora's long-running adventure. Indeed, the sky seems like the limit for Kingdom Hearts 4, especially if it leverages modern gaming hardware and new crossover opportunities wisely.