The Reality Check: Tower Defense Simulator (TDS) is famous for being extremely stingy with codes. The developers (Paradoxum Games) typically only release codes during massive holiday events or major milestones.
As of January 2026, there is likely only one major active code remaining from the Winter event. If you see videos claiming “10,000 Gems Code” or “Free Engineer Code,” they are fake.
📦 Active Codes (January 2026)
CHRISTMAS2025– Redeem for 1x Christmas 2025 Skin Crate (Newest – Redeem ASAP before Feb)TDS5YEARS!– Redeem for 1x Party Skin Crate (Legacy code – may still work for new accounts)
⚠️ The “Try It” List (Hit or Miss)
These codes are old but sometimes work on fresh servers or specific updates.
NOTESLA?– Redeem for 1x Premium Skincrate (Very Rare)JOHNRETURNS– Redeem for John Skin (Likely Expired, but worth 1 try)
❌ Confirmed Expired (Do Not Use)
These are consistently clickbaited but are 100% dead.
MERRY2024ROBLOXD1ED1BILLIONCOMMUNITY20CELEBRATION21BLOXY21
📝 How to Redeem
- Launch Game: Open TDS.
- Open Menu: Click the Codes button (Twitter Bird icon) on the bottom left of the screen.
- Enter: Type the code exactly as shown.
- Claim: Press Redeem.
- Note: You must own the tower to use the skin. If you get a “Minigunner Skin” but don’t own the Minigunner, the skin is saved in your inventory until you buy the tower.
🔓 How to Get Free Skincrates (No Robux)
Since codes are rare, here is the only way to get free skins in 2026:
- Daily Login Streak:
- Logging in for 7 Days in a row grants you a Premium Skincrate (worth nearly 100 Robux). This is the most consistent way to get skins.
- Weekly Quests:
- Check your Quest tab (top right). Weekly quests often reward High Grade Crates or Consumables (like Flags/Grenades).
- Pizza Party / Badlands:
- Beating these special maps on specific difficulties unlocks exclusive skins (like the Cowboy or Warden skins) that cannot be bought.