Comparison

Roach Outbreak vs Nishikigoi Pond

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
Read full description

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

Nishikigoi Pond

Create and nurture a virtual koi pond. Watch unique fish grow, breed them to develop new patterns, and enter them into competitions. This simulation allows you to manage a serene aquatic environment with distinct koi characteristics.

Highlights
  • Unique, procedurally generated koi patterns
  • Koi growth and color development
  • Breeding system for new lineages
  • Discovery of rare 'phantom' koi
  • Koi show competitions
  • Daily care and pond management
Features
Read full description

A small pond, in the palm of your hand. Tap to scatter feed, and your koi rise from the deep water, trailing ripples as they come. ■ A pond in 3D Look straight down, from an angle, follow a single koi, or dive beneath the surface. Switch views to watch your koi from any angle. The seasons drift on the water: cherry petals in spring, green maple in summer, red leaves in autumn, camellias in winter. ■ A pattern no other koi will ever wear Every koi's markings are generated, one fish at a time. Kohaku, Sanke, Showa, Tancho, Ginrin — the same pattern is never born twice. ■ Raise them A young koi's colors are still pale. Day by day the hi (red) rises, the kiwa (edges) sharpen, and the sumi (black) surfaces only later. What this one becomes, you won't know until it grows. ■ Breed them Choose two koi and cross them, and a fry is born carrying its parents' patterns. A jumbo bloodline, a Tancho bloodline — build your own lineage in pursuit of the perfect koi. ■ Phantom koi Once in a great while, a koi is born that no field guide holds — a "phantom." Sakura-fubuki, Hoshifuri, Hisui, Suminagashi, Raimon. One of a kind, for your pond alone. ■ The show Enter your finest koi in the show. Balance of the hi, sharpness of the kiwa, quality of the sumi, the body. The judges score in earnest. ■ The Hall of Fame Koi you raise to greatness retire to a pond of black lacquer and flowing gold. Feed three times a day, keep up your daily care, and watch a pond of your own slowly take shape.

Screenshots

Roach Outbreak4 screens
Nishikigoi Pond4 screens

Verdict

The call

The clearest difference is update cadence: Nishikigoi Pond at every 9 days against Roach Outbreak's monthly. Nishikigoi Pond also leads on iOS requirement (17.0 vs 26.5). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Roach Outbreak ships an update monthly, Nishikigoi Pond every 9 days. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
Roach Outbreak versus Nishikigoi Pond: the parameters behind the verdict, then further details
ParameterRoach OutbreakNishikigoi Pond
PriceFreeFree
Rating—4.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyMonthlyEvery 9 days — better
AdsYesYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhoneiPhone, iPad — better
Requires iOS26.517.0 — better
Further details — not scored
Size64 MB9 MB
Age rating12+4+
Developerkenshin miyamotoKouki Ohta

In-app purchases

None

Roach Outbreak

No in-app purchases

None

Nishikigoi Pond

No in-app purchases

Questions

Is Roach Outbreak free?
Roach Outbreak is free to download, with no in-app purchases.
Is Nishikigoi Pond free?
Nishikigoi Pond is free to download, with no in-app purchases.
Do Roach Outbreak or Nishikigoi Pond have ads?
Both Roach Outbreak and Nishikigoi Pond show ads.
Which is updated more often, Roach Outbreak or Nishikigoi Pond?
Roach Outbreak ships an update monthly, and Nishikigoi Pond every 9 days. Most recently, Roach Outbreak was updated on October 31, 2026 and Nishikigoi Pond on October 31, 2026.

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