Jason says, “Yea, you guessed it, Bloodstained: Ritual of the Night is a 2D game. It takes place in 3D environments, but other than some change in angles, it remains a left-right-up-down affair in the sub-genre known as ‘metroidvania’.”
Source: N4G PC Bloodstained: RotN Backlog Review – For When All This Newfangled 3D Gaming Is Too Much D