There are so many free mobile games for Android and Apple/iOS that you will run out of funds or not want to spend money on them. This is where redeemable codes (promo codes) come into play! When you redeem a code in a specific game, you will be given free items that you can use to purchase in-game items, upgrades, and abilities! While not all games have codes, many of the popular free games do, which means that if you like gacha, idle, and strategy games, you'll probably find some free useful codes for that!