Undermaster

Undermaster is a free-to-play dungeon-building and management simulation game developed by Upjers.

In the game, you take control of a dark underground dungeon and act as an evil overlord who builds lairs, recruits monsters, and lures adventurers into traps.

Main features include:

• Building and expanding an underground dungeon
• Digging tunnels and creating rooms for different purposes
• Summoning and managing monsters (goblins, orcs, creatures, etc.)
• Setting traps to defeat invading heroes
• Collecting loot from defeated adventurers
• Upgrading dungeon facilities and defenses
• Completing quests and unlocking new monsters and rooms
• Managing resources to grow your evil empire

Gameplay focuses on:

• Strategic dungeon layout design
• Resource and monster management
• Defending against waves of heroes
• Expanding deeper into the underground world

Unlike typical farming or city-building games, Undermaster puts players on the “villain side,” where the goal is to create the most efficient and dangerous dungeon possible.

It is similar in style to other Upjers simulation games such as:

• Kapi Hospital
• My Little Farmies

The game became known for its humorous dark-fantasy theme and casual strategy gameplay, combining dungeon management with light RPG-style elements.