Comparison

Roach Outbreak vs Prefecture Survival

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Roach Outbreak

Features
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Your phone has been infested. “Roach Outbreak” is an unconventional idle simulation game where you feed, hydrate, raise, and breed a colony hiding deep inside a dark crevice. What begins as a tiny colony soon grows out of control. Egg cases appear, nymphs hatch, and roaches multiply until the entire room is crawling. Disgusting. Yet impossible to look away. Before long, you may even find a favorite. 【RAISE AND MULTIPLY】 Leave food and water for your colony. Watch each roach eat, move, grow, and reproduce. How large can your infestation become? 【SHINE A LIGHT】 Point a light at the colony and watch them scatter in every direction. It is horrifyingly satisfying. 【CHOOSE YOUR FAVORITE】 Name one special roach and track its size, growth, meals, and survival time throughout its life. 【COLLECT RARE ROACHES】 Discover Jet Black, Red Copper, Silver Back, Albino, Oil Slick, and the legendary Golden roach. Hatch special egg cases and complete your collection. 【BUILD YOUR OWN HIDEOUT】 Arrange scraps of paper, old receipts, empty boxes, and other hiding places. Unlock unsettling locations such as beneath the refrigerator, behind the kitchen shelf, and beside the tatami. 【RECORD YOUR OUTBREAK】 Track your largest colony, biggest roach, longest survivor, and fastest specimen. Capture your infested room and share it as an image. You hate them, but you cannot stop watching. You fear them, but you keep raising them. Begin your forbidden outbreak today.

About

Prefecture Survival

Features
Read full description

Prefecture Survival is a watch-and-cheer battle royale: the shapes of all 47 Japanese prefectures bounce around inside a ring, and any prefecture that slips through the rotating gap is out. The last one standing wins. HOW IT WORKS 1. Tap Start and all 47 prefectures start bouncing after a 3-2-1 countdown 2. Part of the white ring is open. The gap rotates and slowly widens 3. Any prefecture that flies out is eliminated, and the elimination order is listed live at the top 4. The last prefecture standing wins. See the podium and the full ranking A game takes about two minutes, and the motion is random, so every result is different. Cheer for your home prefecture with friends and family. FEATURES - Real shapes: every prefecture outline comes from map data, color-coded by region - Region mode: play with only Kanto, only Kyushu & Okinawa, or any combination - All-time leaderboard: wins and podium finishes are recorded - Share results: winner, 2nd and 3rd place as text to social apps or messages - Satisfying sound effects: bumps, eliminations and a victory fanfare (can be turned off) - Settings: speed (4 levels), gap size, rotation speed, name labels, haptics SAFE AND SIMPLE - Free, no account, no internet connection needed - No ads, no in-app purchases - No personal data is collected. Stats stay on your device Results are a random simulation and do not rank real prefectures. Prefecture shapes are derived from Global Map Japan (Geospatial Information Authority of Japan).

Screenshots

Roach Outbreak4 screens
Prefecture Survival4 screens

Verdict

The call

The clearest difference is in-app purchases: Roach Outbreak at none against Prefecture Survival's 1. Prefecture Survival's advantage is update cadence (every 2 days vs monthly) and iOS requirement (17.0 vs 26.5). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Prefecture Survival sells 1 one-off in-app purchase. Roach Outbreak asks for nothing beyond the download.

UpkeepUpdate frequency

Roach Outbreak ships an update monthly, Prefecture Survival every 2 days. Both last shipped on October 13, 2026.

Scorecard3 real differences · 3 level
Roach Outbreak versus Prefecture Survival: the parameters behind the verdict, then further details
ParameterRoach OutbreakPrefecture Survival
PriceFreeFree
Update frequencyMonthlyEvery 2 days — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS26.517.0 — better
Further details — not scored
Size64 MB5 MB
Age rating12+4+
Developerkenshin miyamotoPocoyo

In-app purchases

None

Roach Outbreak

No in-app purchases

1 purchases

Prefecture Survival

One-time1
  • Remove Ads$2.99

Questions

Is Roach Outbreak free?
Roach Outbreak is free to download, with no in-app purchases.
Is Prefecture Survival free?
Prefecture Survival is free to download, with in-app purchases available.
Do Roach Outbreak or Prefecture Survival have ads?
Both Roach Outbreak and Prefecture Survival show ads.
Which is updated more often, Roach Outbreak or Prefecture Survival?
Roach Outbreak ships an update monthly, and Prefecture Survival every 2 days. Most recently, Roach Outbreak was updated on October 13, 2026 and Prefecture Survival on October 13, 2026.

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