Yes, you can get free stars just by playing the game! Here's how:
- Clearing a stage with a 3-star rating for the first time will give you 1 Star Crystal
- Clearing the boss stage of an area (Ghost Field, Snowblooms, Singing Hills, etc.) for the first time will give you 3 Star Crystals
- Completing the last boss stage of a world (Vermanix, Arphenon, Carthago) for the first time will give you 10 Star Crystals
- The 28 Days of Brave Brigade event gives a Star Crystals on days 6, 13, 20, and 27.
- Clearing some Achievements or Quests will reward you with Star Crystals
- Doing each Secret Stages once a day for Random Star Boxes.
- Completing the Daily Quests for Star Fragment 1 x15.
Star Crystals can also be purchased using real money. More information can be found in the Shops page!