Death Ray Manta SE

Death Ray Manta SE launched on September 17, 2015 as a self-described short-form arcade game with 32 screens of content. In the very first week post-launch, the developer explicitly stated on September 25, 2015 that while he wouldn't be expanding the game itself, he planned to work on quality-of-life improvements around the edges — things like menus, toggles, and Steam achievements. He followed through on those smaller updates through early 2016: a November 23, 2015 patch added a score display option, and a February 1, 2016 patch exposed configuration files and released the source code, with the developer noting these were "prep work" incremental improvements rather than content additions. That February 2016 post is the last developer communication on record. The game launched as a deliberately compact, complete package, the developer explicitly ruled out expanding its content, and the subsequent updates were all polish and accessibility work. With no post-launch content cycle, no unreleased DLC, and no developer activity since February 1, 2016, the game is a finished product.