These games typically are rendered using two-dimensional graphics, but can include 2.5D-rendered games using 3D graphics engines but limiting player movement to two dimensions, such as the aforementioned Shadow Complex. The exploration and character development concepts of Metroidvanias can be used in other genres, though these games typically are not categorized as Metroidvanias.[10] For example, the Metroid Prime trilogy is a first-person shooter that builds on the same style of exploration play as Metroid. Dark Souls is a third-person action role-playing game loosely considered a Metroidvania featuring "soft locks" – obstacles in the form of boss characters that are difficult but not impossible to defeat when the player-character is starting out, and become much easier to defeat with increased experience and abilities.[1] The third-person action/brawler Batman: Arkham series also uses similar concepts as a Metroidvania, with Batman collecting new gadgets to access new areas.[10] The 2017 Prey was developed as a first-person-perspective immersive sim but using Metroidvania level design concepts to require the player to traverse the setting multiple times as they gain additional tools and abilities.[18]