Posted by Grevier

I think the main problem of the PTR is that you need to have two games installed.
Also having it on the arcade would give us boxes while we test the changes and you will receive far more feedbacks.

Your idea is really cool but unfortunately the PTR version of Overwatch is a totally separate game that you need to have installed.

Since this post, the game now features an Experimental Play mode, which can test limited balance changes on the live game client including console platforms. Completing games in Experimental Play will earn XP and rewards appropriately on the live game account.