Zombie Battle Tycoon How to Get the Free MAC-10
Join InfinityBattles on Roblox for the free MAC-10 and accelerate your first wave clears.
The MAC-10 is one of the highest-value early unlocks in Zombie Battle Tycoon because it arrives as a free InfinityBattles group reward instead of a deep cash sink. This short guide shows exactly how to claim it, clarifies that the old INFINITYBATTLES code is expired, explains why the gun matters in your first sessions, and points you to codes and the Weapons Guide for what to do next.
Claim steps (group reward)
- Open the official group: InfinityBattles on Roblox.
- Join the group while logged into the same account you play Zombie Battle Tycoon on.
- Rejoin or refresh the game so group rewards can apply.
- Check your loadout for the MAC-10 and equip it beside the starter Glock from Getting Started.
That is the live path. Creators sometimes still mention a historical code INFINITYBATTLES, but that code is expired. Do not wait on chat macros for a dead code—the group reward remains the supported way to receive the gun.
Why the MAC-10 matters early
Day-one plots run on a starter Glock (17 ammo, 17 body / 30 headshot) while walls and scientists are still incomplete. A free SMG-style MAC-10 adds volume fire for Normal, Fast, and Mini packs on the straight approaches without forcing you to skip critical Base Defense buys. More clears means fewer leaks into the collector room, which means scientists keep uploading and you reach rebirth readiness sooner.
Practical pairing:
- MAC-10 for lane volume and barrel-escort fights.
- Glock for clean headshots when ammo discipline or single targets matter.
- Trench Shotgun later for doorway chokes once you can afford it (see Weapons Guide).
Because the MAC-10 is free, you can spend early collector cash on walls, windows, and scientists instead of racing every firearm button. That balance is exactly what Getting Started recommends for the first hour.
Codes, Discord, and Twitter
Group membership solves the MAC-10. Separate promo codes still matter for cash and other rewards. Keep the Codes hub open, redeem in-game early in a session, and watch the InfinityBattles Discord and Twitter channels for new drops. Codes rotate and expire; the group gun is the stable freebie, codes are the rotating bonus layer.
If a code fails, confirm spelling, freshness on the Codes page, and that you are in the correct experience. Never confuse an expired MAC-10 code with the still-valid group join requirement.
After you equip the MAC-10
- Finish exterior walls so your new firepower is not wasted on a sieve plot.
- Practice owner-only door baits while spraying down packs.
- Attempt cure barrels only when the lane is stable—SMG mobility helps, but Bosses and Waves threats like Berserker rage still punish greed.
- Compare your next gun buys against the Tier List and the Weapons Guide.
- When the base nears 100%, switch focus to How to Rebirth so exclusive soldiers and nukes come online.
Troubleshooting
Joined the group but no gun: Rejoin the place, confirm you used the same Roblox account, and wait a moment for rewards to refresh. Check that you joined group ID 16495000 (InfinityBattles), not a lookalike.
Still only see the Glock: Finish the tutorial flow so weapons are unlocked, then re-check the inventory/loadout UI.
Thought a code would grant it: The INFINITYBATTLES code is historical and expired. Use the group path above.
Wondering if it is worth it after rebirth: Yes. Free volume fire still helps every rebuild while you repurchase walls and wait on Gate Soldiers and Soldier Weapon Upgrades.
Related guides
Read Getting Started for the collector loop, deepen firearm knowledge in the Weapons Guide, redeem rotating rewards on Codes, and continue through Base Defense, Bosses and Waves, and How to Rebirth. All walkthroughs are listed on the Guides Hub.
Frequently Asked Questions
Quick answers for Zombie Battle Tycoon players.
How do I get the free MAC-10?
Join the InfinityBattles Roblox group at https://www.roblox.com/groups/16495000/InfinityBattles, then refresh or rejoin Zombie Battle Tycoon and equip the reward.
Does the INFINITYBATTLES code still work?
No. That code is expired. The free MAC-10 comes from the group reward, not the old code.
Why should new players prioritize the MAC-10?
It adds free volume fire so early cash can go into walls and scientists instead of another paid gun.
Where do I find active codes for other rewards?
Use the Codes Hub and watch InfinityBattles Discord and Twitter for new drops. Redeem early each session.
I joined the group but do not see the gun. What now?
Confirm the correct group and account, rejoin the game, finish the tutorial if needed, then check your loadout again.
What should I read after claiming the MAC-10?
Continue with Getting Started and the Weapons Guide, then Base Defense and How to Rebirth as your plot matures.