From briefly looking over the toot, I think the German version is called openDesk (bad choice as there seems to be some interior design software with the same name) there is a community version you can self host in a docker container. They apparently also have distro packages for Debian and Ubuntu but they seem to have stopped development on those.

Here’s a link: https://opendesk.eu/en/

Since roguelike is also derived from the game rogue, is simply suggest something like survivor-like. Your suggestion has the problem: not all are 2D, not all have distinguishable waves, and not all are auto shooters :D