Steam
Store data
- UK price
- Free
- US price
- Free
- Positive reviews
- 50%
- Total reviews
- 2
- Release date
- 23 September 2026
Activity briefingSummary of recorded signals
Steam player data · App 5220360
HemoSim
- Single-player
- Keyboard Only Option
- Family Sharing
Concurrent players0Most recent successful sample
Today's peak08/144 samples
Tracked peak2Highest retained daily peak
Steam rating50%2 reviews
Steam metadata
Game information
Details supplied by the Steam store
- App ID
- 5220360
- App type
- Game
- Developer
- Pablo Kessler Saiz ↗
- Publisher
- Pablo Kessler Saiz ↗
- Supported systems
- Windows · macOS
- Genres
- Action, Indie, Simulation, Strategy, Free To Play
- Release date
- 23 September 2026
- Last player update
- 27 Oct · 01:30 UTC
Steam store data
System requirements
Supplied by the developer on Steam
Windows
Minimum
- Requirement
- Requires a 64-bit processor and operating system
- OS
- Windows 10 version 1809 (build 17763) or later
- Processor
- 64-bit processor, Intel Core i3 or equivalent
- Memory
- 2048 MB RAM
- Graphics
- Integrated graphics
- Storage
- 500 MB available space
Recommended
- Requirement
- Requires a 64-bit processor and operating system
macOS
Minimum
- Requirement
- Requires an Apple processor
- OS
- macOS 11.0 (Big Sur) or later
- Processor
- Apple Silicon
- Memory
- 2048 MB RAM
- Graphics
- Integrated graphics
- Storage
- 500 MB available space
- Additional Notes
- Apple Silicon only. Not compatible with Intel Macs.
Recommended
- Requirement
- Requires an Apple processor
Launch window
Released 23 September 2026 · Tracking from 23 September 2026
SteamWatch’s first observed day and week; tracking can begin after release. Top Sellers is Steam’s revenue ranking, not a sales estimate.
- Player peak
- 2
- Steam reviews
- 0Rating not recorded
- Twitch peak
- Not recorded
- Price observed
- Free
- Top Sellers
- No appearanceNo ranked days
1 player-data day recorded in this window.
- Player peak
- 2
- Steam reviews
- 10% positive
- Twitch peak
- Not recorded
- Price observed
- Free
- Top Sellers
- No appearanceNo ranked days
7 player-data days recorded in this window.
Peak 0Average 0Latest 0
24-hour and 7-day views use hourly peaks from ten-minute samples. Longer views use retained daily peaks. Up to 24 recent event markers are shown per layer.
Twitch
Twitch stats
Awaiting the first Twitch sample.
Long-term history
Monthly players breakdown
Calculated from SteamWatch samples
| Month | Peak | Gain | % gain | Average | Avg % gain |
|---|---|---|---|---|---|
| Last 30 days | 2 | 0 | 0.0% | 0 | -42.3% |
| October 2026 | 2 | 0 | 0.0% | 0 | -60.4% |
| September 2026 | 2 | — | — | 0 | — |
Store price Regular price
Daily regional sweep
Regional prices
4 regions checked
| Region | Currency | Regular | Current | Discount | Historical low | Last change |
|---|---|---|---|---|---|---|
| United KingdomGBP · GB | GBP | Free | Free | 0% | Free | No change recorded |
| United StatesUSD · US | USD | Free | Free | 0% | Free | No change recorded |
| Euro areaEUR · DE | — | — | Unavailable | — | — | No change recorded |
| United Arab EmiratesAED · AE | — | — | Unavailable | — | — | No change recorded |
| AustraliaAUD · AU | — | — | Unavailable | — | — | No change recorded |
| BrazilBRL · BR | — | — | Unavailable | — | — | No change recorded |
| CanadaCAD · CA | — | — | Unavailable | — | — | No change recorded |
| SwitzerlandCHF · CH | — | — | Unavailable | — | — | No change recorded |
| ChileCLP · CL | — | — | Unavailable | — | — | No change recorded |
| ChinaCNY · CN | — | — | Unavailable | — | — | No change recorded |
| ColombiaCOP · CO | — | — | Unavailable | — | — | No change recorded |
| Costa RicaCRC · CR | — | — | Unavailable | — | — | No change recorded |
| Hong KongHKD · HK | — | — | Unavailable | — | — | No change recorded |
| IndonesiaIDR · ID | — | — | Unavailable | — | — | No change recorded |
| IsraelILS · IL | — | — | Unavailable | — | — | No change recorded |
| IndiaINR · IN | — | — | Unavailable | — | — | No change recorded |
| JapanJPY · JP | — | — | Unavailable | — | — | No change recorded |
| South KoreaKRW · KR | — | — | Unavailable | — | — | No change recorded |
| KuwaitKWD · KW | — | — | Unavailable | — | — | No change recorded |
| KazakhstanKZT · KZ | — | — | Unavailable | — | — | No change recorded |
| MexicoMXN · MX | — | — | Unavailable | — | — | No change recorded |
| MalaysiaMYR · MY | — | — | Unavailable | — | — | No change recorded |
| NorwayNOK · NO | — | — | Unavailable | — | — | No change recorded |
| New ZealandNZD · NZ | — | — | Unavailable | — | — | No change recorded |
| PeruPEN · PE | PEN | Free | Free | 0% | Free | No change recorded |
| PhilippinesPHP · PH | PHP | Free | Free | 0% | Free | No change recorded |
| PolandPLN · PL | — | — | Unavailable | — | — | No change recorded |
| QatarQAR · QA | — | — | Unavailable | — | — | No change recorded |
| RussiaRUB · RU | — | — | Unavailable | — | — | No change recorded |
| Saudi ArabiaSAR · SA | — | — | Unavailable | — | — | No change recorded |
| SingaporeSGD · SG | — | — | Unavailable | — | — | No change recorded |
| ThailandTHB · TH | — | — | Unavailable | — | — | No change recorded |
| TaiwanTWD · TW | — | — | Unavailable | — | — | No change recorded |
| UkraineUAH · UA | — | — | Unavailable | — | — | No change recorded |
| UruguayUYU · UY | — | — | Unavailable | — | — | No change recorded |
| VietnamVND · VN | — | — | Unavailable | — | — | No change recorded |
| South AfricaZAR · ZA | — | — | Unavailable | — | — | No change recorded |
| CIS (regional USD)USD_CIS · AM | — | — | Unavailable | — | — | No change recorded |
| Latin America (regional USD)USD_LATAM · AR | — | — | Unavailable | — | — | No change recorded |
| Middle East & North Africa (regional USD)USD_MENA · EG | — | — | Unavailable | — | — | No change recorded |
| South Asia (regional USD)USD_SASIA · PK | — | — | Unavailable | — | — | No change recorded |
Positive rating50.0%
Positive reviews1
Negative reviews1
Review history is not available for this range yet.
Recent views use Steam's daily review activity. Longer views use weekly totals, retained by SteamWatch.
About this game
Description
Supplied by the Steam store
A game about keeping alive a patient who is slipping away.
HemoSim puts you behind a monitor. On the other side is a patient in shock: the pulse climbs, the pressure drops, urine output stops. You have drugs, fluids, a defibrillator and very little time. Every lever you pull changes the whole system, and almost never only in the direction you wanted.
Three ways to lose a patient
Hypertensive heart failure: the heart won't pump and pulmonary pressure rises.
Hemorrhage: volume drains away and compensatory tachycardia eventually gives out.
Septic shock: resistance collapses and capillary leak empties the system from inside.
Ten variables, all coupled
Pulse, mean arterial pressure, central venous pressure, cardiac output, blood volume, systemic vascular resistance, pulmonary capillary pressure, pulmonary artery pressure, stroke work and urine output. They all move at once, and none of them moves alone.
A drug cabinet with immediate effect
Dopamine, dobutamine, epinephrine, nitroglycerin, furosemide, saline, propranolol, amiodarone, transfusion, antibiotics, the defibrillator and BIPAP ventilatory support. Turning up a vasopressor fixes the pressure and breaks something else. That's the game.
Cockpit Mode
Swap the monitor for a cockpit of analog instruments: gauges, an annunciator panel with warning lights, and a tabbed multifunction display. Workups — blood gas, blood count, echocardiogram, lactate, Swan-Ganz catheter — are requested and take a few seconds to come back. As in real life, you can't read what you haven't measured. The Swan-Ganz unlocks three gauges that stay dark until then. Switch interfaces mid-run without losing the patient.
Free Mode and Exam Mode
In Free Mode you pick the condition or leave it to chance, and score on difficulty and speed: up to +7 if the patient pulls through, −10 if not. Exam Mode chains ten cases back to back and grades you on the average. It is harder than it looks.
Disclaimer
HemoSim is a video game. It is not a teaching or instructional tool and must not be used to make clinical decisions of any kind. The formulas are deliberately simplified, and doses, timings and patient responses were tuned to make the game work as a game, not to resemble reality.
Free software. Pablo Kessler.
Legal notice
HemoSim is an entertainment video game. It is not a medical device, a teaching or instructional tool, or a source of clinical information. The author accepts no responsibility for any use of it beyond entertainment.
Steam gallery
Screenshots
10 available
Steam has not listed DLC or a demo for this game yet.
Steam global stats
Achievements
0 achievements
No public achievements found.This game may not use Steam achievements, or its global unlock data may not be public yet.
Saved from Steam
Patches
1 tracked update
HemoSim 3.5.1 – update
This is a fairly comprehensive update, with improvements to both the pathophysiological simulation and the user interface. Improved pathophysiological simulation Improved user interface Exam mode has been renamed Competition mode New in-game instructions that explain what every button does, in all 5 languages HemoSim is a game. It is inspired by real pathophysiology but simplified to make it playable; it is not a teaching tool. Free, with no ads, no in-app purchases and no data collection. Thanks for playing!
Read full update on Steam ↗
Game activity
Recent changes
Steam events and SteamWatch observations
- SteamReview activity
1 new Steam review
1 positive · 0 negative.
- SteamPatch
HemoSim 3.5.1 – update ↗
This is a fairly comprehensive update, with improvements to both the pathophysiological simulation and the user interface. Improved pathophysiological simulation Improved user interface Exam mode has been renamed Comp…
- SteamReview activity
1 new Steam review
0 positive · 1 negative.
- SteamWatchPlayer data
New tracked player peak
2 concurrent players — the highest daily peak recorded at that point.
- SteamRelease
Released on Steam
Release date supplied by the Steam store.