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Return from Core

Return from Core

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.

Released Jul 17, 2025 Developer 顽核社 Funcore Club Publisher 2P Games, Shochiku Platforms Windows CraftingSurvivalAutomationBase-BuildingSandbox
View on Steam ↗ $16.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

74.9%positive1,086 reviews
Recommended · 1 found this helpful

“Игра очень понравилась, играл на самой высокой сложности вампиром, выфармил плчти все что можно, выполнил наверно все или почти все квесты которые нашел. Хоть и выполнил квест на автоматический сбор ресурсов(пришлось смотреть прохождение, которые мне не помогло, но потом я…”

— a player, Steam review · 75 hrs played
Recommended · 0 found this helpful

“Yep its great, i would love it if the first boss didnt drop a broken pickaxe with 97% power though destroys the whole progression on layer 2-3-4-5-6 and so on. Why drop something that good that early? just remove it from the drop pool or nerf it to have the same power as layer…”

— a player, Steam review · 19 hrs played
Not recommended · 7 found this helpful

“This game sucks! You need to restart the entire game because you performed a quest out of sequence. I restarted the game and cleared the entire level both times but could not advance to the next level because I completed a quest before it was a given quest. Its a know issue the…”

— a player, Steam review · 87 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 14:01 UTC · history via SteamCharts.

22playing at last check
3124-hour peak
1,896all-time peak
0 500 1k 2024 2025 2026 656 avg · Dec 2023

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

35achievements
8.3%median completion
0.8%rarest: Underground Slayer
56.9% of players 56.8% of players 53.4% of players 48.5% of players 34.6% of players 32.6% of players 22.4% of players 21.8% of players 18.4% of players 17.8% of players 13.0% of players 12.7% of players 12.7% of players 12.1% of players 11.8% of players 11.0% of players 9.7% of players 8.3% of players 7.1% of players 6.3% of players 5.3% of players 5.3% of players 3.4% of players 3.3% of players 3.3% of players 2.6% of players 2.3% of players 2.0% of players 1.9% of players 1.6% of players 1.5% of players 1.5% of players 1.4% of players 1.2% of players 0.8% of players 56.9% 0% most earned rarest
Almost everyone has
56.9%God of War — Won a Battle with a Monster Girl in one attempt
56.8%Steady Progress — Successfully repaired the Super Drill Hub
53.4%Pitch Black — Reached Core Level 2
Rarest badges of honor
0.8%Underground Slayer — Eliminated 10,000 monsters
1.2%Railroad Worker — Placed 1,000 Rail segments
1.4%Just for Fun — Played Gaming Console with Monster Girls 10 times

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$16.99current · sampled 2026-07-26 08:39 UTC
$16.99lowest since tracking began2026-07-11
US16.99 USD
EU16.49 EUR
UK14.29 GBP
Australia24.95 AUD
Canada21.99 CAD
Japan1,900 JPY
Brazil52.49 BRL
China56.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$8.3 Brazil Japan Canada US Australia EU UK≈$19

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $10 $20 07-11 07-14 07-17 07-20 07-23 07-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 25, 2026
6/24 Minor Update

Hey fellow adventurers!We've released a minor update addressing the following issues:Added a Monster Manual featureA comprehensive database of all underground creatures. Defeat a monster to unlock its

Sep 04, 2025
Minor Update V1.0.9

Hey fellow adventurers!We've released a minor update addressing the following issues: Fixed an issue where the Item Selection and Field Guide screens would not unlock item slots properly in Sandbox Mo

Aug 19, 2025
Medium Update V1.0.8

Hey fellow adventurers! Greetings! We're excited to announce that version 1.0.8 is launching soon. This update brings several major optimizations and new features designed to make your underground adv

Aug 06, 2025
Minor Update V1.0.7

Hey fellow adventurers!We've released a minor update that improves and fixes the following issues: System Improvements:· Added custom keybinding options for "Interact 2 (C)" and "Interact 3 (V)" Bug F

Jul 29, 2025
Minor Update V1.0.5

Hey fellow adventurers!We've released a minor update that improves and fixes the following issues: System Improvements:Ÿ Improved drone performance and efficiencyŸ Enhanced radial menu positioning acc

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAction, Adventure, Indie, RPG, Simulation
Player tagsCrafting · Survival · Automation · Base-Building · Sandbox · Singleplayer · Early Access · Adventure · Dungeon Crawler · Building · Exploration · Mining (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Steam Workshop · Partial Controller Support · Steam Cloud · Family Sharing
LanguagesSimplified Chinese * , English, Japanese, Traditional Chinese, French, German, Spanish - Spain, Russian, Portuguese - Portugal *
Achievements35
Estimated owners50,000 – 100,000 (SteamSpy)
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 64 bit Processor: Intel Core i3-3240 (2 * 3400); AMD FX-4300 (4 * 3800) Memory: 4 GB RAM Graphics: GeForce GTX 750 Ti 2GB DirectX: Version 11 Storage: 4 GB available space