For the Lucio Fulci film (also known as Zombie Flesh Eaters ), "useful features" usually refer to the technical highlights or unique selling points of the movie:
A feature where you can grow plants to earn "Boosts," making them start a level with their Plant Food effect already activated. Zombi 2
A core feature that provides a temporary, high-powered boost to any plant. For the Lucio Fulci film (also known as
Found in the Wild West world, these allow players to move plants vertically to react to shifting zombie lanes. Zombi 2
In the game, a "useful feature" often refers to gameplay mechanics or specific plant/zombie interactions that give players an advantage:
Speeds up gameplay, which is useful for farming levels or completing easy stages quickly. 🎬 Zombi 2 (1979 Film)