As for in-game transactions, we looked at designing that around more of a "convenience" model. In other words, players will be able to make certain micro-transaction purchases in the game, but they will not be for improved weaponry or anything that will give you an unfair power advantage. Instead, players will be able to purchase things that will help save time, such as reviving their character in normal mode, buying slightly more effective food, hydration packs, medkits, etc. To get those things they will need to spend Gold Coins in the game, which can be obtained by hunting down the special, mutated zombies, extracting their stem cells and then selling them in safe settlements or by purchasing them in-game. So, essentially, players will be able to play the complete game without ever engaging in micro-transactions, but the option is there for convenience