This is a different post compared to my usual updates about game development and my misadventures with technology. This post is an essay on why I consider Half-Life (specifically, Half-Life 1) to be a Metroidvania game. Firstly, what is a Metroidvania? Well, if we consult the Wikipedia page for the subgenre, we can see that it's a portmanteau of Metroid and Castlevania. When the page lists the characteristics of this kind of game, the first aspect mentioned is its 2D sidescrolling gameplay. This rules out the possibility of Half-Life being a Metroidvania, right? Well, Metroid does have the Prime trilogy which brings the franchise and its iconic gameplay to the third dimension. Castlevania, while it doesn't have any official 3D games, does have a fanmade Doom mod that throws the franchise into 3D, adhering of course to the limitations of id tech 1. The conversion of Metroid and Castlevania into 3D retains their iconic gameplay mechanics and thus, I believe 3D games shouldn'