It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

×
Just an FYI for anyone who's having difficulty playing multiplayer.
To play with another player, both must be using the Galaxy app. The host loads the game and goes to the multiplayer menu. Then invites the friend (which needs to be on your friend list on Galaxy of course). Your friend will receive an invite in their chat in GALAXY, which they click accept, and the game will auto-load and bring you to the multiplayer lobby of the host.