If the player forgets to choose a plant that is required for the terrain in order to beat the level at all or will make it much harder to do so, he or she will be alerted and given the option to continue or rechoose plants. Plants that are not chosen cannot be placed during the level. Rarely, some zombies are large enough to take up multiple rows or columns.Īlthough at first the player has enough slots to contain all of his Plants, after he gets the Snow Pea (which is the seventh Plant), the player must begin choosing what plants to bring into the level. Some plants are made specifically to combat certain zombies, which is one of the reasons the gallery of zombies to be fought in that level is shown. Although most attempt to get to the other side of the screen, gaining you a game over, some actually just sacrifice themselfs to help others get past for example, the Miner Zombie goes all the way to the end of the screen before coming up and eating his way backwards. Some types take more hits to defeat then others, and some have special abilities. Although they are called rows, some stages have groups of tiles that create rows with turns. They also effect things like drilling time, zombie speed, ect. are all types of ground that require special things to build on. The Terrain of a level also effects the ground type water, soft soil, rock, slanted grass, sand, ect. However, certain types of Plants and Zombies can move or attack on rows other then their own. Most Plants attack only Zombies on that row, and most Zombies only walk foward on their starting fow. The playing field is typically split into various amounts of tiles, which create a row. This prevents someone placing larges amounts of cheap Plants quickly. After a Plant has been placed, even if you have enough Sun for another, you must wait for it to recharge before placing another of the same kind. Each Plant costs a certain amount of Sun to place at first Sun falls from the top of the screen, but then the player can place Sunflowers or other plants to increase the rate of Sun. The game, as explained above, is an action-adventure 3D tower-defense game thus, the goal is to place units, in this case Plants, to stop the Zombies.
3.3 Instant Mower Active Deployation (I.M.A.D.).