Here is the cold, hard truth:

Since the original PC port is no longer commercially available, most fans have moved toward more modern and secure methods to enjoy the game on a larger screen. 1. Android Emulators (Recommended)

: As of February 2024, Rovio permanently shut down the activation servers for its legacy PC games, including Bad Piggies. Key Validation

Expect to pay $15–$25. It is more than the original price, but it is the last legal stock of the game.

: You could often type any string of characters (e.g., "ROVIO" or "12345") into the activation box, and it would trigger a successful response.