If you are looking for games on the PS Vita that share the same frantic, side-scrolling beat-'em-up and RPG elements as Castle Crashers, the following titles are highly recommended by critics and the community: Dragon's Crown
– Beat game on Normal. Enemies have 4x health and damage. Not recommended on Vita due to slowdown.
If you are looking for that classic 2D brawler feel native to the handheld, these titles are often recommended by the PS Vita community Dragon’s Crown