There are two great versions of this game! A longer version with some secret agent gameplay (where you infiltrate an enemy facility and cure affected "zombies" using darts) that is better for desktops, and a shorter version without the secret agent gameplay. They both have the same content and send online scores to the same place.

Which Version Do You Want to Play?

Shorter Version

NO darts. Better for mobile devices, touch screens, and students who just want to focus on the science without the extra game elements!

Longer Version (Secret Agent)

More fun! (Especially on desktop or laptop computers). Includes action gameplay where you infiltrate Dr. Vial's lab and cure the Zombie toxin using darts filled with the protein antidote (that you make using genetic engineering).