How I'm reading it, is that all Lemmy v0.18 servers (and lower) will no longer work with Voyager v2 web app. And Lemmy v0.19 does work. But I might be wrong..
Here is the changelog text
The next release of Voyager will be v2. Voyager v2 will break support for lemmy v0.18 for progressive webapp clients! This is due to CORS limitations where web clients cannot set a custom Cookie header for backward compatibility, and the new v0.19 lemmy-js-client removes authentication via the auth url param.
That was an awesome game. I remember playing it with my friends and if you hit the top 10, we would write our name with 'the best'.
It also had a level editor. I created one with a lot of jumps.
Good times!