Roblox will also release codes that you can use to redeem items designed by the Roblox team. Codes are usually released during one of the many in-game events or giveaways.

Here is the list of all the new Blades codes, which players can redeem for free coins and gems to get high-tier weapons.

How to redeem codes in exchange for in-game rewards in Grow a Garden on Roblox.