And Meta had to ruin all of the fun with one update.
Viewing post in Eclipse Mods Cube Runners Modded APK comments
Well, if you have a Quest 1, you may be able to run it, because Quest 1 is stuck on v50, but it's not likely. The current version of Cube Runner's minimum SDK level is probably above 29 (Android 10.) Even if you manage to get it running, Cube Runners was never designed to support Quest 1, so it would probably lag out. I had recently ordered a Quest 1, and it arrives tomorrow, I'll test it and see if it works.