[_qwfv]

You might not understand it, but the term is well understood in the gaming community. Just like Metroidvania, the genre description has evolved from previous games.

Another common genre is Souls-like, stemming from the mechanics of Dark Souls. It's a term for a game that has bonfire like mechanics, high difficulty, punishments on death, etc. There are many games that are souls likes that share none of the visual themes or moment to moment combat mechanics of Dark Souls.

And as several other people have commented, the games are similar to rogue, just at a higher level of abstraction than you are looking at them.

[greggman3]

MetroidVanias though actually make sense. The game play is similar to Metroid or Castlevania. So taking that same direction a roguelike should be similar to rogue. I've seen zero MetroidVanias where the similarities to Metroid and Castlevania aren't 100% clear.