Plants vs. Zombies
"Plants vs. Zombies" took three and a half years to make. Much of the first year of development focused on Adventure mode. Semple began working on ideas later used for Mini-Games mode. Some ideas for the Puzzle mode section were later modified and moved into Adventure mode: "Vasebreaker" and "I, Zombie", for example, came from single-level concepts for Mini-Games mode. During testing, Fan found that the Mini-Games and Puzzle modes detracted from a focus on Adventure mode, so he locked most additional modes, requiring advancement within Adventure mode to unlock them. Later, the development of "Plants vs. Zombies" consisted of Fan testing the game and writing down notes of what could be done to tweak it before sending them off to Semple. The last year of development had the team fine-tuning "Plants vs. Zombies" before release.