Isbarah was recently released on Steam for Windows, OS X, and Linux, offering a mash-up platformer. Word is: "Isbarah is a cross-genre of bullet hell and platformer style, it's a hardcore 2d game and each level is a duel boss fight. In Isbarah, you have the standard platformer game controls and bosses will fight like in bullet hell games." This post has details on the latest patch, which updated the game to version 1.03.1. This trailer offers a look.