i remember there is atleast 1 sequel. it has bright goofy graphics. and you build traps like wooden spikes that come out of the floor. kind of like a zombie tower defense except the player you control can also attack and die if eaten by the zombies. i thought it was called kill all zombies but that turns out to be a top down zombie shooting game. this is 6-8 years ago I THINK

it was either first or third person. either the first or second game had a wizard as one of the characters and after defeating several waves you would advance to the next level.

another trap was like a piece of wood that would knock zombies of the platform every few seconds and into lava. the core gameplay was how you placed the traps. secondary was using your character to clean up a few of the zombies and use your special which i think was like a temporary freeze spell for the wizard.