This is a free (obsolete non-HD) version of Crystallight Defense HD - a "tower defense" game with hours of exciting gameplay and online leaderboards. You can find free HD version on Google Play, just search for Crystallight Defense HD Free.

Build towers, mix crystals, use obstacles and mines to destroy enemies! Various crystals' features and unrestricted mixing abilities allow you to build your own unique strategies.

You will fight against evil mechanical creatures of the Mech Lord to defend your Kingdom, castle by castle in the Campaign mode. As you go, you get skill points to upgrade your abilities that help you to move forward.

Fight in the Battle mode with your own setup to challenge other defenders in worldwide leaderbords!

The FULL VERSION features:
- no annoying ads
- 40 unique maps (you can replay each to get a higher score)
- 4 base types of crystals that can be mixed to get unique effects
- Battle mode up to 320 waves
- cloud profile storage
- online leaderboards (6 tables + table for each castle and user profiles)

See more about this tower defense game: http://smartpixgames.com/crystallight