I had to design the towers and create them in 3d ( MAYA).
all the towers had an upgrade version.
The funny part was to render them in very small format ( 80x80 pixels).
I also did the cover of the game using the same 3d models , but in bigger format , and I made a composition in Photoshop.
Another task was to create the zombie face that would be thegame button on Apple site .
I did two version , one as an illustration , and the other as a 3d model .