All Star Tower Defense X
Top Down Games' anime tower defense sequel - summon units from the Gate, upgrade mid-battle to unlock new attacks, and push story mode or the Infinity Tower with friends. Nearly a billion visits and still updating.
Codes redeem at the bird icon in the bottom-left corner. The big ones right now pay 2,500 Gems + 85 Trait Burners + 20 Bounded Cubes each - that's four summons' worth of gems plus a full trait-reroll session. Next code is slated for 600K likes.
Working codes
Getting started
Summon from the Gate
The Gate's unit pool rotates every 30 minutes - spend Gems when the banner holds units you actually want.
Upgrade mid-battle
Units unlock new attacks as you pour cash into them during a wave - feeding your carry early beats spreading thin.
Traits and rerolls
Trait Burners reroll unit traits - save them for units you've committed to, not banner filler.
Team up
Story mode and the Infinity Tower scale up with friends - co-op clears stages solo runs can't.
FAQ
Where do I enter codes?
The bird icon in the bottom-left of the screen - paste the code (case-sensitive, and soww is lowercase) and hit Redeem.
ASTD X vs the original?
ASTD X is the sequel - more units, more levels, and its own code list; progress doesn't carry from the original All Star Tower Defense.
When's the next code?
The game page says next code at 600K likes - it crossed 570K already, so it's close.