Ninja Kiwi is a New Zealand developer best known for the Bloons Tower Defense series, which originated as a browser game and grew into a major franchise across mobile and PC platforms. Bloons TD 5, Bloons TD Battles, and SAS: Zombie Assault 4 are among their most recognised titles. Their catalogue of around 50 games reflects a consistent strength in the tower defence genre and a talent for retaining large player communities.