War of Reproduction is a free iPhone game developed by JUNG NAM KIM. In this unique and strategic game, players take on the role of a sperm on a quest to find the biggest cell of a woman. With simple touch and drag controls, players navigate through a long journey, traveling a distance of 3000 times their body length.

The game offers diverse strategic situations in different regions, adding depth and complexity to the gameplay. The balance and difficulty levels have been carefully designed to ensure addictive gameplay. Players can upgrade their sperm using broccolis obtained during gameplay, and must eliminate estrogen, the female hormone that interferes with sperm production.

The background of the game is based on the competitive environment of procreation, where sperm have become aggressive over the years. Studies have shown that when sperm from another male is added to semen, over 50% of it will be attacked and killed within 15 minutes. Sperms create net-like structures to prevent others from moving forward and even launch brutal attacks using acrosomal enzymes.

War of Reproduction provides a unique and strategic gaming experience for players, challenging them to survive and become the sole survivor out of 30 million competitors.