Tower of Fantasy codes are a way of getting free stuff in the new Genshin-like open world sci-fi RPG. It's pretty usual for gacha games to release freebies in the form of codes, helping players get in-game or premium currencies to trade for randomized pulls of new characters, or to ease the burden of all that material farming they're inevitably going to have to do...
Read more.
Tower of Fantasy codes currently active and how to redeem them
Source: PC Gamer (opens in a new tab)