Boson X

Boson X launched on September 15, 2014 as a self-contained arcade runner with a fixed set of 18 levels, 3 playable characters, and Steam leaderboards/achievements. The store description emphasizes a deliberately streamlined design with "no superfluous powerups, coins or XP systems," reinforcing that this was shipped as a complete, finished product. The developer's news posts on this game's Steam page have consisted entirely of announcements about other games — a new puzzle game (Dissembler, February 2018), a new arcade game (JUMPGRID, February 2019), and a new logistics game (Mars First Logistics, September 2021). None of these posts indicate any further content planned for Boson X itself. The last developer communication of any kind on this page was September 13, 2021. There are no DLC listings, no roadmaps, no patches, and no developer statements suggesting additional content was ever planned post-launch. Boson X launched as a finished game and has remained so. Someone waiting for all content to be available could have played it in full on its release date.