A new ROM hack called Castlemania from LetsTalkGames blends the platforming style of Super Mario with the aesthetics and challenging gameplay of early Castlevania titles. The developer aims to evoke nostalgia through features like instant-death blocks, hidden secrets, and familiar enemies, while maintaining the NES difficulty.
This looks fun.
The article didn’t mention what base rom you need to run the ips file. I tried with both castlevania iv and super mario world. Maybe I need a different version?