About This Demo

Dig, Dig, and Keep on Digging!

A High-Speed Mining Action Game Mastered with Only Two Keys.

HOLER! is an intensely simple and stoic mining action game where you plunge into the unknown depths of the earth with nothing but a drill in hand. You aren't driven by wealth or fame. What moves you is a primal obsession: to go "just one step deeper."

The labyrinth of rock accelerates relentlessly. A 0.1-second lapse in judgment will shatter your drill and end your journey. No excuses. No distractions. Sharpen your reflexes and reach for the abyss.

【About the Demo】

In this demo, you can experience the core mechanics and explore up to 1,500 meters.

• Playable Range: Up to 1,500 meters.

• Modes: Single-player only.

【Full Version Features】

• The Ultimate Simple Controls: Up and Down Keys Only

  Forget complex commands. This game tests your pure reaction speed. Sync your fingertips with your instincts to dodge closing walls by a hair’s breadth.

• Breathless, High-Speed Action

  Once you start digging, there’s no stopping. With accelerating scrolls and narrowing paths, experience the "Zone"—the ultimate state of focus that awaits beyond the limit of speed.

• Up to 4-Player Simultaneous Mining(Full Version Only)

  Turn a solitary obsession into a four-player frenzy. Supporting up to four players locally, compete or cooperate as you plunge into the depths. Prove who can go the deepest and survive the longest among your friends.

• Stoic Gameplay Where a Single Mistake is Fatal

  A "5-minute life-or-death struggle." This condensed tension will lure you back into the underground again and again. An endless challenge to surpass your past self—and the rivals by your side.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Generative AI (LLMs and Image Generation AI) was used in the following development processes:

Translation & Text: AI was used to assist in writing store descriptions and translating in-game text into multiple languages (English, Chinese, etc.).

Graphics: Steam store assets (Capsule images) and Achievement icons were generated using AI.