Working codes

Codes are case-sensitive - and the 0s and 3s in the secret codes are numbers, not letters. Redeem each one separately at the Code Machine.

AT0M3Atom Robot (exclusive) + 1 Golden Dice · secret
ULTRASECRETC3DEPermanent +10% Cash boost · secret
S3CRETC0DE+10% Arena Damage boost · secret
THANKYOU1 Golden Hammer, 2 Skip Tickets, 150 XP
FREEDICE2 Golden Dice
ARENA30 min Damage Boost + 500 Cash
LUCKY30 min Luck Boost + 2 Rerolls
DRONES250 Cash + 250 Scrap
TOSPACE15 min Luck + Money Boosts
SCRAPKING1,000 Scrap
STEELFIGHTERS500 Cash
RELEASE150 Cash, 200 Scrap, 100 XP
Redeem order: take AT0M3 and ULTRASECRETC3DE first - a free legendary-tier robot and a permanent cash boost are the two rewards that keep paying. The timed boosts (ARENA, LUCKY, TOSPACE) should wait until you're about to start a long grind session, not before logging off.

How to redeem

  1. 1
    Launch Steel Fighters and finish the tutorial

    The Code Machine does not work until the tutorial is done.

  2. 2
    Find the Code Machine

    It sits in the Junkyard lobby area, right next to Events.

  3. 3
    Press E and paste a code

    Walk up, press E (tap the prompt on mobile), paste one code into the box and hit Redeem. Repeat for each code - they do not stack into one entry.

FAQ

Why is my Steel Fighters code not working?

Case matters, and the secret codes use numbers that look like letters: S3CRETC0DE has a 3 and a 0, ULTRASECRETC3DE has a 3, AT0M3 has a 0 and a 3. Paste rather than type. If it still fails you may have redeemed it before - codes are one use per account.

Which Steel Fighters code is the best?

ULTRASECRETC3DE - the +10% Cash boost is permanent. AT0M3 is second: it is the only code that hands you an actual robot.

Are there any expired codes?

No - the Code Machine only went live on October 24, 2026, and every released code still works. They are time-limited though, so redeem soon.

Where do new codes come from?

The developer releases them with updates and events - watch the game's Roblox page and the Events board next to the Code Machine.