Skull Up

Skull Up

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Logo of Skull Up

Skull Up: From Rookie Skeleton to the Ultimate Undead King

Build your bone-powered empire in the zero-grind idle RPG. Command over 60 unique Skellies, master smart strategies, and claim your throne with effortless rewards even while you're offline.

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Publisher

EFUN PIONEER COMPANY LIMITED

Category

Games

Downloads

0

User Rating

1.0/5

Total Ratings

0

Locales

3

Witness Your Evolution

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A small skeleton hero in a red cape walking along a golden path toward a spooky castle under a blood moon

A small skeleton hero in a red cape walking along a golden path toward a spooky castle under a blood moon

Skull Up mobile game pre-registration banner featuring a flaming skull character on a motorcycle with reward packs.

Skull Up mobile game pre-registration banner featuring a flaming skull character on a motorcycle with reward packs.

Split screen showing a skeleton fishing in the snow and underworld dungeon management in the game Skull Up

Split screen showing a skeleton fishing in the snow and underworld dungeon management in the game Skull Up

Character collection screen in Skull Up game showing various skeleton heroes and a high rank SSS reward

Character collection screen in Skull Up game showing various skeleton heroes and a high rank SSS reward

A game screenshot showing the evolution of a character in Skull Up from a Level 10 Rookie Skull to a high-level powerful undead king.

A game screenshot showing the evolution of a character in Skull Up from a Level 10 Rookie Skull to a high-level powerful undead king.

A battle scene in Skull Up showing strategic character combos and combat effects in an undead fantasy setting.

A battle scene in Skull Up showing strategic character combos and combat effects in an undead fantasy setting.

Skull Up mobile game screenshot showing undead castle base building and idle resource management gameplay

Skull Up mobile game screenshot showing undead castle base building and idle resource management gameplay

Gameplay screens of Skull Up showing the adventure map character collection and battle mode

Gameplay screens of Skull Up showing the adventure map character collection and battle mode

Ascend From Zero to Skull King

The tools that make this app stand out, trusted by 0 users.

🧬

Transform & Conquer

Discover 60+ Skellies with dual forms—Human and Skull—each packed with unique powers and designs to build your dream team.

💎

Zero-Waste Progression

Never lose a single resource. Our loss-free system lets you refund and reinvest 100% of your upgrades to experiment without risk.

⏳

Offline Empire Building

Manage your undead castle 24/7. Your skull workers smelt, log, and mine for you, ensuring massive rewards even while you are away.

About the app

Everything you need to know about Skull Up.

Description

[Game Features] Even a rookie skull can become the Skull King! In Skull Up, you will rise from the bottom to the throne: collect over 60 Skellies to form your unique teams, enjoy idle management with abundant rewards, and unlock multiple adventures. Come and unleash the power of the undead and evolve from a nobody into the Skull King! [Endless Fun, Underworld Adventures] A rookie skull uncovered hidden treasures! In Skull Up, you can amass massive resources through management gameplay, or defeat mighty enemies with smart strategies. Join a guild and fight alongside your bone buddies! More content await—nonstop excitement guaranteed! [Diverse Skellies, Boundless Power] Gather various Skellies during your path to becoming the King! During this adventure, you will encounter over 60 unique Skellies with distinct looks and abilities. With diverse designs, they can be switched between human and skull forms, who are your strongest bone allies! [Easy Progression, Loss-Free Growth] Power up your companions without pressure: The loss-free progress system allows you to upgrade any Skelly—the resources can be fully refunded. Experiment freely, optimize your team, and achieve rapid power spikes with no investment wasted. [Free Combinations, Smart Strategies] Level up nonstop and show the king’s edge! Unlock your strategic potential and assemble a bone-powered team. Whether breaking defenses or providing support, every Skelly hides unique strengths— deploy them wisely! [Idle Management, Effortless Rewards] Future king, this undead castle is yours! Assign skull workers to smelt, log, and mine—gain massive EXP and valuable resources even while offline and level up with ease! With an idle strategy system, victory comes effortlessly!

Latest Version

1.0.12

Size

187.6 MB

First Released

Feb 5, 2026

Claim Your Throne as the Skull King Today

Rise from a rookie skull to the ultimate ruler of the underworld. Enjoy effortless idle rewards and zero-loss growth. Your kingdom awaits!

Download on App Store
FAQ

Frequently Asked Questions

Everything you need to know about Skull Up

What is Skull Up?

Skull Up is an idle management game where players collect and evolve over 60 unique Skellies. They manage an undead castle, engage in strategic combat, and gather resources to become the Skull King.

How many Skellies can players collect in Skull Up?

Yes, Skull Up allows players to collect over 60 distinct Skellies. These Skellies possess unique appearances and abilities, and can transform between human and skull forms for strategic advantage.

Does Skull Up offer idle gameplay mechanics?

Yes, Skull Up features idle management gameplay. Players assign skull workers to smelt, log, and mine, gaining massive EXP and valuable resources offline, ensuring effortless rewards and progression.

Can Skelly upgrades be reversed or refunded in Skull Up?

Yes, Skull Up includes a loss-free progress system for Skellies. All resources used for upgrades are fully refunded, enabling players to freely experiment with team compositions and power spikes.

What kind of strategy is involved in playing Skull Up?

Skull Up requires smart strategies through free Skelly combinations. Players assemble bone-powered teams to break defenses or provide support, utilizing each Skelly's unique strengths for tactical victories.

Can players join guilds in Skull Up?

Yes, players can join guilds in Skull Up. Guilds allow players to fight alongside their "bone buddies," unlocking additional content and enhancing their underworld adventures together.

What are some adventure activities available in Skull Up?

Skull Up offers diverse adventure activities including managing resources, defeating mighty enemies, and exploring the underworld. The game also features mini-games like fishing for additional engagement.

Is there a pre-registration bonus for Skull Up?

Yes, pre-registering for Skull Up provides exclusive bonuses. Players receive an SSS Skelly, a Beginner Pack, and Infinite Summons upon pre-registration, offering a significant head start.

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