To unlock the full version of on PC, you can try several activation codes that have historically bypassed the registration screen. Common Activation Codes
This is the big one. Angry Birds Seasons featured a calendar icon. Each day in December, a new door opened. If you missed December 14, 2011, you missed Treat or Trick? level forever... unless you change your device's date. angry birds seasons unlock code full
This is where Seasons truly shines. The developers didn't just reskin the levels; they reinvented the atmosphere. To unlock the full version of on PC,
Rovio never released a universal "cheat code" like "UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, B, A" for Angry Birds . The game was built on a timestamp-based unlocking system. Your device's system date dictated which seasonal levels were "available." Each day in December, a new door opened