Project Iron Codes (October 2026) - Free Rerolls & Boosts
All working Project: Iron codes for the Roblox gym simulator - free rerolls for genetics, plus muscle and money boosts. Updated for the V2.6 EXPANSION patch.
Active Project Iron codes
Case-sensitive - paste them exactly.
THANKYOUFree rewardsNewSORRY50 rerolls (each) + 20% muscle/strength, 25% money, 10% luck boosts for 20 minNewREROLLS50 rerolls (all categories)EXPANSION50 rerolls (all categories)OPTIMIZATION35 rerolls (all categories)ARMWRESTLING15 rerolls (all categories)
Expired
TARNISHEDFree rewards
How to redeem
- 1Launch Project: Iron
Open the game on Roblox.
- 2Click the Codes button
It sits on the start screen before you press Play.
- 3Paste a code and hit Redeem
Rerolls and boosts credit instantly - spend the rerolls on genetics right away.
What rerolls do in Project Iron
Project: Iron is a gym sim from Irongrid Games - 22 exercises, 62 muscles, bodybuilding shows and powerlifting meets.
Your genetics (height, weight, frame, gene rolls) cap how big and strong you can get - which is why reroll codes matter. Each reroll re-draws part of that genetic hand, and stacking ~200 free rerolls from the list above gives you a real shot at a top-tier physique without grinding. Boosts from SORRY stack nicely onto a heavy training session.
FAQ
Why is my Project Iron code not working?
Codes are case-sensitive - copy instead of typing. If it still fails it probably just expired; TARNISHED is already gone.
When do new codes drop?
With major updates and milestones - the V2.6 EXPANSION patch brought the current batch. The Irongrid Games Discord announces them first.
What should I spend rerolls on?
Genetics first - frame and gene rolls have the biggest long-term impact on how much muscle you can carry.