40 Days [四十天]

40 Days [四十天]

Black Phoenix Studio · November 29, 2017 · Outbreak Sim, Indie, Simulation, Strategy, Difficult

Buy 40 Days [四十天] from Steam at $4.99 — the cheapest of 1 store we compare.

PC
Mixed54% · 13
Best price
$4.99
lowest tracked $1.24
Steam Buy at Steam

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Where to buy 40 Days [四十天] — official stores

Steam
Steam
Standard Edition · Steam
$4.99
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40 Days [四十天] price by region

40 Days [四十天] costs $3.29 in Georgia (USD), £3.99 in the United Kingdom, $4.99 in the United States, €4.99 in Europe (EUR), CA$5.69 in Canada, NZ$6.29 in New Zealand, A$7.50 in Australia, R$10.89 in Brazil and zł17.99 in Poland right now.

Cheapest 40 Days [四十天] offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
Georgia (USD) $3.29 $3.29 — 1
United Kingdom £3.99 £3.99 — 1
United Statesyour region $4.99 $4.99 — 1
Europe (EUR) €4.99 €4.99 — 1
Canada CA$5.69 CA$5.69 — 1
New Zealand NZ$6.29 NZ$6.29 — 1
Australia A$7.50 A$7.50 — 1
Brazil R$10.89 R$10.89 — 1
Poland zł17.99 zł17.99 — 1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About 40 Days [四十天]

✦ AI summary

40 Days challenges you to contain a viral outbreak spreading across your city while managing resources, research, and competing factions within a 40-day deadline. Navigate tough strategic decisions involving quarantine measures, medicine production, cult suppression, and lab upgrades as you race to discover the cure before the virus mutates beyond control.

40 Days is a special strategy simulation game related to infectious diseases spread all over the city. You, as ahead of the quarantine department, have been given full authority and manpower to contain the city, deal with different parties, virus in the city and most importantly find out the cure.

40 Days [四十天] — game info

Platforms
Windows, macOS
Player modes
Single-player
PC Game Pass
Not included
More games like this:Mac games

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Not recommended Nov 29, 2017
Short and Simple Review. Pros: -Challenging. In higher difficulties, unforgiving. Cons: -Plenty of spelling errors and incorrect sentences in the english ver. -Infection chance reduction methods do not work. -Instruction are vague in certain areas, but the simplistic gameplay makes up for it. -The art direction is all over the place. You have 3D, anime, real life pictures, and simple designs mix together in a way that does not work.
18 found this helpful
Recommended Nov 29, 2017
Pros: -Challenging game -Idea is good, something new to play Cons: -Game explanation not enough, take few games to understand how it works -Too much design element Since just an indie game, so those flaw is acceptable.
3 found this helpful
Not recommended Sep 3, 2023
At this point, I think it is safe to say that this game is abandonware. Game is still broken, english still poorly understood, I have to save and quit and re-enter where I left off every time there is a suggestion where I got to press ok on. Unless you got a lot of patience, don't buy the game. It ain't worth the trouble.
1 found this helpful
Recommended Dec 11, 2019
its fun but hard at the beginning
1 found this helpful
Recommended Sep 5, 2026
40 Days takes the familiar concept of a deadly epidemic and approaches it from the perspective of the people responsible for containing the disaster. Developed and published by Black Phoenix Studio, it is a strategy and management game in which the player takes command of a quarantine department during a rapidly worsening outbreak. The central challenge is immediately understandable: there are only forty days to research the disease, develop a cure, and prevent the city from collapsing. That fixed deadline gives the campaign its identity, turning time into one of the most important resources available. The gameplay is built around managing several interconnected problems rather than simply waiting for researchers to discover a solution. Laboratory work is essential, and infected citizens or useful samples must be examined to improve understanding of the virus. The disease can mutate, making research an ongoing struggle rather than a completely predictable progression toward victory. Every day spent improving the scientific response is also another day in which infection, shortages, disorder, or other emergencies can become more dangerous. This creates a constant tension between so…

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