About the demo : this demo offers a glimpse of the full game. Some features are locked or limited, including game modes, the shop, archetypes, mutators, and challenges.
Death isn't the end.
For you, it is only the beginning.
In Undying One, you play as a necromancer who turns fallen enemies into loyal servants. Every battle strengthens your army as you expand your control over the dead.
Fight in real-time with active pause, command your minions, and shape your playstyle through spell mastery and undead specialization.
Command Your Undead Army
Every defeated foe can be turned into a summon — tank, mage, support, or DPS.
Their stats, spells, and behaviors are preserved and grow alongside you.
Choose how to deploy them:
Send them to overwhelm enemies
Hold defensive positions
Focus down key targets
Recall them to safety
Your army is your greatest weapon.
A Dynamic AI System
Your summons choose their targets, spells, and priorities based on:
threat level
distance
enemy weaknesses
their assigned role
randomly selected tactical behaviors
No two fights ever play out the same.
Real-Time Combat with Tactical Control
Battles are fast and chaotic, but you are never without control.
Use the active pause system to:
issue precise orders
manage your undead forces
cast spells at the perfect moment
Switch seamlessly between strategic control and real-time action.
Progression Through Use
Spells and summons grow naturally:
cast a spell → it becomes stronger
keep a summon alive → it gains power
Side effect: spells become more expensive but more powerfull.
Mana is a constant source of pressure.
Unlockable Mutators & Difficulty
Customize your runs with modifiers such as:
random starting spells
reduced maximum mana
increased vulnerability
support spells disabled
unstable corpses
Each mutator has its own unlock condition and increase the run's rewards.
Between-Run Shop
Spend in-game currency to unlock:
permanent upgrades
new spells
stat bonuses
archetypes
Feature List
Raise fallen enemies and wield their powers
Tactical AI for allies and enemies
Usage-based evolving spells
Challenge to complete
⏸ Active pause to plan and command
⚔ Intense real-time combat
Unlockable mutators for themed runs
Persistent shop between runs
Infinite Arena mode
Smart off-screen indicators
