There are a few genres from the early days of gaming that have persisted into the modern day. One of those genres that has fallen by the wayside a bit is the Metroidvania, pioneered by the Metroid and Castlevania franchises. These games combine 2D side-scrolling action with dynamic puzzling that often requires players to double back once they've received new abilities, creating a replayability that is seldom found in other genres. In recent years, much of the genre has been supported by indies keeping the tradition alive, but one half of the genre's namesake has recently returned in the form of Metroid Dread.