
Mine, build, and explore with Monster Girl companions in this underground sandbox adventure. Uncover lost tech, automate production, and forge bonds with allies as you fight to survive and journey back to the surface.
Modeled estimate, not a reported figure. How we estimate →
Prices
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
Every market we collect.
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.29/day in the week to Aug 31 → 0.86/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Mine endlessly – Swing your pickaxe or blast entire mineral veins for resources
Explore a vast underground world – Discover secrets of humanity’s downfall
Befriend Monster Girls – Gain allies with unique abilities for battle and life
Build your base – Craft, decorate, and create a home underground
Automate production – Unlock machines and logistics to accelerate progress
Fight powerful enemies – Explore dangerous ruins and forgotten technologies
After surface civilization's destruction, you're an underground survivor exploring a world of unknowns and dangers. Wield your pickaxe, explore ruins, befriend Monster Girls, build automated production lines, construct your base, and return to the surface!

Grip your pickaxe and extract abundant underground resources. Chip away at rock walls or use powerful explosives to blast entire mineral veins - enjoy the satisfying destruction. Collect ores and rare materials to fuel construction, production, and equipment upgrades.

Meet Monster Girls with unique abilities during your underground adventures. Each has distinct personalities, but earn their trust and they become powerful combat allies with special exploration skills. They also help at your base with farming, cooking, gathering, and production - boosting your survival efficiency.

The vast underground hides countless secrets and dangers. From deep caverns to forgotten human ruins, fight alongside Monster Girls against powerful creatures, discover scattered lost technologies, and uncover the truth behind humanity's downfall.

Start with just a pickaxe, but master lost technologies to create powerful machinery. Construct automated production and logistics systems to power the super drill and accelerate your surface return.

In this sunless world, a comfortable, functional base ensures survival. Build workbenches, craft furniture, plan production and living areas, defend against underground creatures, and transform a crude cave into a warm home with your Monster Girl companions.
Take up your pickaxe, join your Monster Girl companions, explore underground secrets, and become the first human to return to the surface!
Engagement
Reviews
Themes across 58 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Bad translation, buggy. As for gameplay its just mediocre. Not a fan of art style either.
挺好玩的,就是内容还是少了点
很休闲的游戏,游戏性上不错,并没有过多重复劳作的过程,建设流水线也不困难,探索体验和游戏流程都不错,官方也很好,推荐喜欢建设的休闲玩家都可以玩一玩
Media

Related
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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: Simplified Chinese*, English, Japanese, Traditional Chinese, French, German, Spanish - Spain, Russian, Portuguese - Portugal*languages with full audio support
Hours played at review time, across 58 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
总的来说,如果不考虑那些乱七八糟的bug,这游戏还是不错的XD
11111
打發時間 偶而玩一下
i m a bit dissapointed of this game but fun to play anyway - there was some glitches to solve, - mass spam of womans about commentary on dissapointing, - as well spam womans when discussing story to advance hiistory, - crash game when quitting game after safe save mode, - some items are hard to unterstand how it work, (aquarium, transport station with robotics planes), - no updates for fixes or news since weeks - others minors things - was spammed one time by an unknown user without friend with him in steam while playing, blocked it immediatly ( bad experience ) - not optimized recettes , cannot select reorganize (normal and premium) and cannot select some food i want for womans make - system about bombs , once i ve upgraded to color blue or purple, once spend them all and item dissaspear , need to recreate bombs and re-upgrade again (cost too much crystals) , bad idea , need to make it definitly like weapons ( after spend all durability, it won t destroy and we can repair it again ) - cannot speed things with x10 or x100 - found a HUGE bug / glitch to get double items easily for two specific items - two endings anyway thanks for this game
charming
好
挺好玩还会更新嘛?流汗了
Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
Related
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