Gunma's Ambition: Conquer Japan in This Hilarious Idle Sim

8/20/2026, 11:34:16 PM

Release date: 8/4/2026

Tags: #idler #collectathon #hand-drawn #casual #incremental #family-friendly #education #2d

User Reviews

Score: 100%2 user reviews
Review Count: 2 reviews
Fetched At: 8/20/2026, 11:34:16 PM

Reference prices

Japan

¥ 298 (JPY)

Steam JP

$2.99 (USD)

Steam Global

Live Store Snapshot

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Japan Price: ¥ 298
Global Price: $2.99
Price in Your Region: ¥ 298Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 30 Aug 2026
Sale Status: Regular pricing
Price Checked At: 8/30/2026, 5:40:22 AM

The price snapshot and review snapshot differ by about 222 hours. Because they are not always refreshed at the same time, confirm the latest Steam listing before making a purchase decision.

Key highlight

Conquer all of Japan and turn it into Gunma Prefecture in this hilarious idle simulation game. Harvest local specialties, amass wealth, and invade prefectures using real census data.

Who this is for

Perfect for players who want to conquer Japan in a uniquely hilarious way!

Details

Overview

Prepare for a uniquely Japanese brand of conquest in "Gunma's Ambition: Turn Your Town into Gunma Prefecture Too!" This casual idle simulation game, developed and published by RucKyGAMES, offers a hilariously absurd premise: turn all of Japan into one massive Gunma Prefecture. It's a game that blends idle mechanics with a geographical takeover fantasy, all wrapped in a charmingly hand-drawn aesthetic.

Highlights

Idle Gameplay Loop: Tap to harvest delicious local specialties that appear over time, earning "G" to fuel your ambitions. Level up your harvesting efficiency to accelerate your progress.
Geographical Conquest: Utilize your accumulated "G" to invade and conquer Japan's 47 prefectures, transforming the entire nation into Gunma.
Data-Driven Simulation: Features real, updated population data from the 2025 Japan Census, adding a layer of quirky realism to the conquest.

Who It's For

This game is perfect for players who enjoy casual, incremental, and idle games with a humorous and unique theme. Its family-friendly nature and educational element (through census data) make it accessible to a wide audience, while the collectathon aspect will appeal to completionists. If you're looking for a lighthearted simulation with a bizarrely specific goal, "Gunma's Ambition" might be your next obsession.

Game Info

Released on August 4, 2026, "Gunma's Ambition" is a single-player experience that supports Steam Achievements and offers custom volume controls and camera comfort settings. The game is developed and published by RucKyGAMES and is available in Japanese with full audio support.