I have a suggestion that in shopping menu using unique icons instead of plain text to display item properties.
What's more, show a tree struct of item dependencies.
It also happens to me. I'm gladly to accept the invitation from a friend. When I logged into the game, I found that I had been permanently banned from these modes except Sandbox Mode. But my friend is still participating the test. I'm not sure if this ban was a mistake or to limit the number of...