Here are some working Blade Ball codes as of October 2023 that can be used to claim free coins, sword skins, and other rewards in the Roblox game:

• HOTDOG10K: Sword Skin
• 10KFOLLOWERZ: Sword Skin
• 500K: 149 Coins

To redeem these codes, launch Blade Ball and click on the "Extra" button in the upper-left corner of the screen. Then, click on "Codes" and enter the code exactly as it appears. Finally, click the checkmark to redeem the code and claim your reward.

Its worth noting that some codes may only be redeemable in private servers, and expired codes will not work. To find more Blade Ball codes, players can check the games official Discord server or bookmark a website that regularly updates with new codes.