GAGamespot
The Metroidvania Genre Owes Credit To Much More Than Castlevania And Metroid
This article explores the origins of the Metroidvania genre, arguing that its roots extend beyond Metroid and Castlevania. It highlights early exploration platformers and RPGs like Aztec and Xanadu: Dragon Slayer 2, as well as Sega's Wonder Boy series, as crucial precursors that introduced key mechanics.