Fallout Shelter [AppStore] is an iOS mobile game where you create and manage your on vault as a overseer at Vault-Tec. The main objective is to expand your vault to gather resources, knowledge. and create a thriving community.
A player is rewarded a LunchBox upon completing certain missions and each LunchBox contains 4 Fallout Shelter cards (which can be any multiple of the following: Cap, Food, Water, Power, Weapon, Outfit, Dweller). A player can opt to buy one or more LunchBoxes with real money via iAPs but a certain redditor found a bug which allows a player to get an infinite number of LunchBoxes.
When starting the game out there is a bug that leaves you stuck in "Tutorial Mode". Basically in Tutorial mode every other "collect 50 resources" mission will give you a Lunch Box for a reward rather than caps, As long as you never finish the missions "equip a dweller with an item" (weapon or outfit) and you don"t finish the mission "Sell an item" then you'll have one mission slot that rotates between 3 other "tutorial quests" which have a lunch box reward 66% of the time. The 3 quests you get end up repeating in "tutorial mode" are "collect 50 food", "collect 50 water", and "level up a dweller".
Important to note: You can equip dwellers with weapons and outfits, and you CAN sell items.. but if you turn in those quests then the "tutorial mode" ends and the amount of lunch boxes you get from rewards drops drastically (to below 10%).
I ended up playing on a new vault today for about 4 hours.. in that span time i was able to build a 3 basement deep vault with 4 slots of fully upgraded power and water, which precisely give me 50 of each resource on the timer, and then i was also able to build a plethora of other rooms as well and get my population up to around 30, with 3 legendary dwellers. My economy is horrendously stable and I've opened somewhere in the ballpark of 50 lunchboxes.. I've obtained about 10 legendary cards and 55 or so rare cards. Its been fun.
In short, don't do the sell and item/weapon or the equip armor ones. It makes the third quest cycle between 50 water and 50 food and rank up dweller. Giving you infinite lunch boxes.