What is the Galaxy Update in +1 Muscle to Arm Wrestle?

The Galaxy Update is a major content expansion that introduced the Galaxy Dumbbell tier (1500x muscle per step), the Cyber City world with extreme-difficulty opponents, and powerful endgame pets. It represents the transition from mid-game to late-game content, requiring players to have defeated the Fantasy World bosses.

How do I unlock Cyber City in +1 Muscle to Arm Wrestle?

To unlock Cyber City, you must first defeat all bosses in The Rock Zone, which requires defeating the Tech Titan (12T Muscle) in Fantasy World. The Rock Zone opponents require 67T to 150T muscle. Once you clear The Rock Zone, Cyber City becomes accessible with opponents ranging from 225T to 79Q muscle.

Is the Galaxy Dumbbell worth the cost?

The Galaxy Dumbbell costs 10B Wins and provides 1500x muscle per step, making it a massive upgrade over the Cyber Dumbbell (500x). It is absolutely worth saving for if you are progressing through The Rock Zone or Cyber City. Use the calculator to plan your path to affording it.

Galaxy Update

Everything about the Galaxy Update in +1 Muscle to Arm Wrestle. New worlds, pets, dumbbells, and features explained.

The Galaxy Update is one of the most significant content expansions in +1 Muscle to Arm Wrestle. It introduced a new tier of endgame content including the Galaxy Dumbbell, The Rock Zone world, and the futuristic Cyber City — the final and most challenging world in the game. This update represents the bridge between mid-game and true endgame, pushing players to reach astronomical muscle levels and encounter meme-themed opponents.

If you have been grinding through Fantasy World and wondering what comes next, the Galaxy Update is your goal. Reaching this content requires defeating the Tech Titan (12T Muscle) and progressing through The Rock Zone before unlocking Cyber City. The rewards are massive — opponents in Cyber City drop up to 10B Wins per match, and the Galaxy Dumbbell provides a staggering 1500x muscle per step.

1 New Features

Galaxy Dumbbell (Tier 9)

1.5Kx

Muscle/Step

10.0B

Cost (Wins)

The Galaxy Dumbbell is a cosmic-themed endgame dumbbell that provides 1500x muscle per step — a massive 3x jump from the Cyber Dumbbell (500x). It costs 10B Wins, making it a significant investment, but one that pays off enormously when farming Cyber City opponents. This dumbbell is essential for taking on the strongest opponents in the game.

Cyber City (World 4)

The final futuristic world with 5 extreme-difficulty opponents. Muscle requirements range from 225.0T to 79.0Q — culminating in the Green Alien, the ultimate boss requiring 79Q muscle and rewarding 10B Wins per match.

Cyber City is the endgame destination where only the most dedicated players reach. The opponents here drop astronomical Win rewards, making it the best location for farming Wins once you can consistently beat its challengers.

The Rock Zone (World 3)

A meme-themed world featuring 3 opponents including The Rock, Troll, and the legendary Skippy Toilet. Muscle requirements range from 67.0T to 150.0T. The Rock Zone serves as the gateway between Fantasy World and Cyber City.

2 New Opponents

Opponent	Muscle Required	Wins Reward	World
The Rock	67.0T	100.0M	Rock Zone
Troll	100.0T	150.0M	Rock Zone
Skippy Toilet	150.0T	200.0M	Rock Zone
Cyber Security Guard	225.0T	500.0M	Cyber City
Gardener	1.5Q	1.0B	Cyber City
Astronaut	4.0Q	2.5B	Cyber City
Galaxy Minor	15.0Q	5.0B	Cyber City
Green Alien	79.0Q	10.0B	Cyber City

3 Endgame Pets

The Galaxy Update era brings access to the most powerful pets in the game. These pets are essential for tackling the extreme muscle requirements of Cyber City and making the most of your Galaxy Dumbbell.

Huge Hydra Dominus Mythical Tier S

The ultimate pet! 150% of the best normal pet's stats. Only 18-101 exist. Gamepass exclusive.

Source: Gamepass (329 Robux)

150x

Muscle

50x

Wins

4 How to Prepare for Galaxy Update Content

Defeat the Tech Titan

Your first milestone is defeating the Tech Titan in Fantasy World, which requires 12T muscle. This unlocks The Rock Zone, your gateway to Galaxy Update content. Focus on maxing your rebirth level and acquiring the strongest available pet to reach this threshold.

Upgrade to the Cyber Dumbbell

Before you can efficiently farm The Rock Zone, you need the Cyber Dumbbell (Tier 8, 500x muscle per step). It costs 100M Wins, which you can farm from Fantasy World bosses like the Devil (10M Wins per match) and the Tech Titan (25M Wins per match).

Push Rebirth Levels

High rebirth levels (10+) are essential for Galaxy Update content. Each rebirth level multiplies your muscle gains, and the opponents here require quadrillions of muscle. Use the calculator to find the optimal rebirth timing for your current setup.

Stockpile Boosts

Save your boosts from codes for push sessions in The Rock Zone and Cyber City. A 2x muscle boost on top of a Cyber or Galaxy Dumbbell with high rebirth and a strong pet makes a massive difference in reaching the next milestone.

Galaxy Update Progression Tips

Farm The Rock first: The Rock (67T muscle, 100M Wins) is your primary farming target in The Rock Zone. Beat him repeatedly to save for the Galaxy Dumbbell.
Skip nothing: Even though The Rock Zone only has 3 opponents, each one gives significantly more Wins than any Fantasy World boss. Do not skip this world.
Galaxy to Universal path: After getting the Galaxy Dumbbell (1500x), your next goal is the Universal Dumbbell (5000x, 1T Wins). Use Cyber City opponents to farm the massive Win requirement.
Pet synergy: The Huge Hydra Dominus (150x muscle, 50x wins) transforms your Galaxy Update experience. If you are considering a Robux purchase, this pet provides the biggest value for endgame content.
Green Alien is the goal: The Green Alien (79Q muscle, 10B Wins) is the ultimate opponent. Reaching this boss is the culmination of all your progression efforts.

Last updated: 2026-05-31