Each and every perk will be unique. Some will last forever and some will last a couple of rounds. Each one of these perks gives the player benefits over time. I was thinking that permanent perks will be bought with tokens and temporary perks will be purchased with in-game money. Here are some of the perks that I've brainstormed: Health Perk - Lasts one round and gives +50 health Costs 2,500 In-game money Damage Perk - Lasts one round and adds one damage to every shot Costs 2,500 In-game money Slight of Hand Perk Lasts forever and doubles reload speed Costs 20 tokens More Ammo Perk Lasts forever and gives 1.5x ammo Costs 30 tokens Please feel free to add your own ideas and let me know. I understand these needs a lot of fixing and changing but hopefully it gets somewhere!