Board Thread:General Discussion/@comment-50.195.130.29-20150401134916/@comment-25179062-20150416135616

Brave frontier is a gacha (gambling) game. When you gamble, you often lose.

Brave Frontier Japan has an Achievement Store where you get points for achievements and can use the points to buy evolution materials, spheres, keys, etc. You can also get points by selling rare summon units to the store. The Achievement Store will probably come to Brave Frontier Global soon.

It is also worth keeping duplicates of units you really like for trials (or Grand Quests, which may be on the way) where you can use three squads.