Here’s the download link for the client for the test tomorrow (around 600MB):
https://orbusvrdownload.s3.amazonaws.com/OrbusVRClient-0.88.zip
To join the test, just run the “OrbusVR_Launcher” application in the folder after you unzip it. Then login with your account (or make one on http://orbusvr.com if you haven’t already) and you’re good to go.
Note that you must re-download the client even if you participated in a previous test. You can delete any previous versions of OrbusVR that you might have on your computer.
Here’s the Play Guide, be sure to read it so you know how to play the game!