Beta or prerelease software is not intended for inexperienced users, as the software may contain bugs or potentially damage your system. We strongly recommend that users exercise caution and save all mission-critical data before installing and/or using this software.
From Vittorio Romeo:
Open Hexagon is a free open-source clone of the game “Super Hexagon by Terry Cavanagh”. Gameplay is easy to learn but hard to master. You control a triangle that rotates around the center of the screen. Your goal is to stay alive as long as possible by avoiding the walls that go towards the center. Features JSON and LUA scripting for complete customization and level sharing.