Talk:Tutorial: How to Play/@comment-180.15.51.190-20131125142131/@comment-24021992-20131128160813

Dev material is a crucial item in this game. You shouldn't waste it.

Well, it's time to hate your money then. You can buy it from item store.

Have you unlocked the last (8th) expedition of the first world ? You can earn a dev material if you are lucky, and it takes 3 hours for the expedition to be done. Check the expedition page if you want to know more.