Many pieces showing that the game was once very different. Strangely, the art is a mix of the art styles of PVZ1, PVZ2, and even PVZ Adventures.
One of the earliest pieces of concept art for the game, showing scrapped heroes, UI, and revealing the game might have used graphics from the original PvZ.Later pieces of concept art, which reveal that art from PvZ 1 was going to be used. Additionally, it appears the heroes were going to use 3D-like renders.Concepts for card designs.More card concept designs. The second design uses art of Chomper from Garden Warfare, for some reason.An early title screen, with the name "Plants vs. Zombies Cardz".Concept art of various plants and zombies in various scenarios.Concept art for various heroes and cards.Concept art for the Bananasaurus card.Concept art for several cards. The many lizard/dinosaur zombies here would end up as Gizzard Lizard in the Triassic Invasion update. Oh, and Shamrock from PVZ Adventures is here as well.
Concepts for a hero levelling system, which never made it into the final game.Note Green Shadow's early name "Penlopea" and the belt made of peas around her waist(?), which is still seen in some comic panels.Super Brainz was once "Captain Brainz".Concept art of several plants that didn't make it into the final game.Designs of some cards that are final or have slight differences, Ancient Vimpire is here as well.Concept art of the various classes in the game. Note how the Crazy class was originally called MadCap and the Beastly class had a different design and was called Hungry.Concept art of Nightcap, quite similar to his final design.More concept art, very different from the previous one.Even more concept art, still very different.Concept designs for Bananasaurus.And yet more.