Implemented old virus sprites  from the original Keep Driving with new reworked mechanics and animation for a in mind for mobile phones

Original Viruses animations had separate  sprites  images which was fine for low end pcs except for the mobile version. Too optimize  them for mobile we had to put them into a singular sprite sheet and used less animation to keep the fps at a manageable rate for low end mobile devices.

Other tweaks include:

• Original game players could closed the Virus too easily nullifying the game play loop so we added new close button mechanic where the phase button phases in and out creating a more efficient game play loop for players 
• Bigger sprites and buttons for small mobile screens
• No movement for the virus to better the new control scheme for mobile  
• Each virus has a new set of mechanics