My version of infected, something i thought of quickly and thought would be a cool idea to implement.
Map: Players would start in an arena, could have diffrent maps to play.
Gameplay: Players would all start together, and have 10 seconds to disperse among the map. Then, an infected player would be chosen. Using the same system that the fire works to burn people and spread, when the infected player would gain a speed boost and an attack that had a decent range, with a one hit kill. Once killed, you would return as infected and try to infect the living. When last man standing is killed, the player with the most "points" would win a prize of gralats. Different maps could have different ways to protect yourself, with different weapons or abilities. Ex. Riot shield, hoverboards
Rewards: Certain prizes could be allotted for X amount of wins or X amount of gralats+wins. These could include perks, such as speed, damage, teleportation, cars, more time to run, buzzing when infected are near, etc.
This idea is fairly simple to make and is heavily customizable. Please post suggestions in comments
Comments-
*Guns could be optional, so one would just have to run around until they were killed, makes it more hectic
*health would be changed to balance the game, as the bullet speed would need to be increased because infected could easily dodge them.