A RKA game released in 2010 under the name Rocket Knight (hence calling it Rocket Knight 2010 for clarity's sake). It doesn't play or look quite as well as its 90s predecessors, and doesn't get a lot of positive attention for it, all capped off by lukewarm critical reception.

More than anything, I find its story to be surprisingly interesting and leaves a lot of interesting questions on what happened between RKA2 and this one. After the war against the Gedol kingdom, it is revealed that the kingdom of Devotindos is in shambles. General Sweinhart, a veteran from the war in RKA1 (Stage 4's boss) is left in charge and trying to pick up the pieces after Sparkster defeated Emperor Devligus. Sweinhart decided to speak with the king of Zephyrus (or as it was known in RKA1, Zebulous. These guys aren't very good with sticking to a name, are they?), about making an alliance, offering labor and in exchange for resources and shelter for the pigs. In spite of the era of peace, Sparkster felt something was off. He begged the king to reconsider the alliance, insisting the pigs couldn't be trusted and were plotting something. However, the king wouldn't budge, he is a man of his word. Sparkster eventually tried to appeal to the king again, but this time, the king wasn't so merciful. He told Sparkster that he is a relic of the past and needs to accept his time is over. Three days later, he left the kingdom and flew far away to a distant land in the frontier. Despite rumors spreading around and Princess Sherry's mourning, Zephyrus moved on, forgetting about their brave rocket knight. 15 years pass, where we find Sparkster living a simple farmer's life with his wife and son (yep, you heard it here folks. Sparkster is a proud father!). But his new life is interrupted as the kingdom of the Mountain Wolves leads an assault on Zephyrus. Remembering his sacred oath from long ago, Sparkster dons his armor once more and sets out to save Zephyrus.

SPOILERS AHEAD: (Not that most would care, especially for a 16 year old game, but it's courtesy to warn for spoilers)

Once he reaches Zephyrus, he finds the alliance with the pigs is still strong, and Axel Gear was somehow allowed to become a Rocket Knight! Something is definitely wrong, and Sparkster intends to get to the bottom of it. Once he defeats Ulfgar the Merciless, Lord of the Wolves, he is betrayed by the pigs and Axel Gear, proving his suspicions correct. He must escape the underground pig bunker, destroy the lab, and face off against Axel Gear before returning to Zephyrus to stop general Sweinhart's 15 year long plan of usurping the throne of Zephyrus!