The development of Kien began in 2002 by a group of friends in Italy for Nintendo's Game Boy Advance handheld. After 22 years, the action-platformer with RPG elements finally launched in 2024, setting a record for the longest development time in gaming history5.
Kien's development began in 2002 and it was finally released in 2024, resulting in a 22-year development period. This makes it the most-delayed video game in history, surpassing the previous record held by Duke Nukem Forever, which took 15 years to be released.
Kien was originally developed for Nintendo's Game Boy Advance (GBA) handheld console in 2002. The game is an action-platformer with RPG elements and was finally released in 2024 after a 22-year delay.