STEAMDB NEXUS

Steam app 3548000 · updated 13 Sep 2026, 00:15 UTC

Cosmobreeder Yiffai

Travel to a forgotten world and study alien creatures in this authentic retro metroidvania!

Cosmobreeder Yiffai Steam header artwork
KEMOSHOCOKEMOSHOCO
1playing now
424-hour peak
71all-time peak
1average, last 30 days

The last 30 days

−2.9Gain−69.61%% gain4Peak

52 hourly samples, with the daily peak drawn over them. Weekends are shaded.

0123414 Aug21 Aug28 Aug01 Sep03 Sep08 Sep10 Sep12 SepFriday 14 August 20261 peakThursday 20 August 20261 peakFriday 21 August 20263 peakTuesday 25 August 20261 peakFriday 28 August 20262 peakMonday 31 August 20262 peakTuesday 01 September 20262 peakWednesday 02 September 20262 peakThursday 03 September 20262 peakMonday 07 September 20263 peakTuesday 08 September 20262 peakWednesday 09 September 20263 peakThursday 10 September 20261 peakFriday 11 September 20262 peakSaturday 12 September 20264 peak
Daily peakEvery hourly sample

All time

18 months, April 2025 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

019385877Apr 2025Jul 2025Oct 2025Jan 2026Apr 2026Jul 2026April 202565 monthly peakMay 202571 monthly peakJune 202522 monthly peakJuly 202517 monthly peakAugust 202510 monthly peakSeptember 20259 monthly peakOctober 20257 monthly peakNovember 20256 monthly peakDecember 202511 monthly peakJanuary 202611 monthly peakFebruary 20267 monthly peakMarch 20266 monthly peakApril 20265 monthly peakMay 20267 monthly peakJune 202619 monthly peakJuly 202614 monthly peakAugust 20267 monthly peakSeptember 20264 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

0481115July 2026August 2026September 2026October 2026July 202614 peak — daily detail belowAugust 20267 peak — daily detail belowSeptember 20264 peak — daily detail below
Monthly peakHas finer data

July 2026

27 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

048111501 Jul05 Jul09 Jul13 Jul18 Jul23 Jul28 JulWednesday 01 July 20269 peakThursday 02 July 202610 peakFriday 03 July 202612 peakSaturday 04 July 202614 peakSunday 05 July 202611 peakMonday 06 July 202612 peakTuesday 07 July 202611 peakWednesday 08 July 20267 peakThursday 09 July 20268 peakFriday 10 July 20267 peakSaturday 11 July 202611 peakSunday 12 July 20266 peakMonday 13 July 20269 peakTuesday 14 July 20266 peakWednesday 15 July 20266 peakThursday 16 July 20267 peakSaturday 18 July 20264 peakSunday 19 July 20264 peakMonday 20 July 20266 peakWednesday 22 July 20265 peakThursday 23 July 20264 peakFriday 24 July 20264 peakSaturday 25 July 20264 peakMonday 27 July 20265 peakTuesday 28 July 20262 peakWednesday 29 July 20264 peakFriday 31 July 20266 peak

August 2026

15 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0246801 Aug03 Aug05 Aug07 Aug11 Aug20 Aug25 Aug31 AugSaturday 01 August 20264 peakSunday 02 August 20267 peakMonday 03 August 20264 peakTuesday 04 August 20266 peakWednesday 05 August 20264 peakThursday 06 August 20263 peakFriday 07 August 20264 peakSaturday 08 August 20264 peakTuesday 11 August 20260 peakFriday 14 August 20261 peakThursday 20 August 20261 peakFriday 21 August 20263 peakTuesday 25 August 20261 peakFriday 28 August 20262 peakMonday 31 August 20262 peak

September 2026

10 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0123401 Sep02 Sep03 Sep04 Sep07 Sep08 Sep09 Sep10 Sep11 Sep12 SepTuesday 01 September 20262 peakWednesday 02 September 20262 peakThursday 03 September 20262 peakFriday 04 September 20260 peakMonday 07 September 20263 peakTuesday 08 September 20262 peakWednesday 09 September 20263 peakThursday 10 September 20261 peakFriday 11 September 20262 peakSaturday 12 September 20264 peak

October 2026

Cosmobreeder Yiffai was released on 24 Apr, 2025.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Updated 13 Sep 2026, 00:15 UTC
App ID
3548000
Last updated
22 May 2025 build 18560504
Developer
KEMOSHOCO
Publisher
KEMOSHOCO
Release date
24 Apr, 2025
Platforms
Windows
Download size
73 MB
Install size
176 MB
Genres
Action, Adventure, Indie
Game modes
Single-player
Controller support
Full
Achievements
60

Features & support

Steam features

Steam AchievementsSteam CloudFamily Sharing

Controllers & input

Full controller supportGamepad RecommendedDualShock Controller Support

Accessibility

Popular tags

Metroidvania2D PlatformerPlatformerRetroPixel GraphicsController2DCuteActionStory RichMultiple EndingsDogsAdventureSci-fiSexual ContentOld SchoolSingleplayerCombatIndieNudity
About this gameFull description from Steam
In an age of faster-than-light travel and advanced cyber-robotics, brave explorers known as Cosmobreeders travel to forgotten worlds and study alien creatures. Play as a lone Cosmobreeder shot down over Planet Tutone, a world fallen to ruin and haunted by ancient betrayal. Your comrades have been captured, your equipment stolen. Armed with only your wits, traverse ancient service tunnels, eerie alien forests, and deep volcanic caverns. Reclaim your gear, uncover alien artifacts, and awaken mysterious ESPer abilities to survive the planet’s numerous dangers. Navigate hundreds of intricate rooms, in which fragile walls hide secrets and hidden paths reward the curious. Battle dozens of unique foes and conquer epic bosses, each victory granting new abilities and allowing you to delve deeper into Tutone. You might be on a solo mission, but you’ll never be lonely! Every rescued Cosmobreeder has a story to tell, and your support team is just a radio call away. Call up Mauser, Tomcat, or Bossu for guidance, banter, and intel on every enemy or item you discover! Meet shopkeepers and other denizens of Tutone, barter for info or equipment. Unravel the story through dozens of hand-crafted pixel art cutscenes. Will you uncover the planet’s mysteries, or fall in battle and be captured like your comrades?
Content & age ratings2 regional ratings

Regional ratings

DEJUS12Linguagem imprópria · Violência
IGRS13Penggunaan bahasa · Kekerasan
System requirementsMinimum and recommended hardware

Minimum

Minimum: Requires a 64-bit processor and operating system OS: Windows 10, 11 Processor: 2.0 Ghz Memory: 2 GB RAM Graphics: 1 Gb Video Memory, OpenGL 3.0/GLSL 1.30 Storage: 200 MB available space

Recommended

Recommended: Requires a 64-bit processor and operating system

macOS

Minimum: Recommended:

Linux

Minimum: Recommended:
Supported languages1 languages
LanguageFull audio
English

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers

Trailers

AchievementsTotal count and selected achievements

60 achievements in total.

Show selected achievements (may contain spoilers)
First FightAchievement
After the ChaseAchievement
Playful PuppyAchievement
ShapeshifterAchievement
A Familiar RivalAchievement
The Beast of LegendAchievement
Lord of the MinesAchievement
It was... you?!Achievement
The Queen of the ElvesAchievement
An Ancient EntityAchievement

View all Steam achievements

3 developer announcements, May 2025 to May 2025 · times in UTC

May

  1. Update Notes for 1.0.5

    - Fixed a bug that could trigger a persistent softlock on the final boss. If your save file was previously affected by this issue, then this update will automatically repair it.

    Patch notes
  2. Update Notes for 1.0.4

    - minor menu edits

    Patch notes
  3. Update Notes for 1.0.3

    - A bug causing the powered up psybomb to detonate early in some situations has been resolved - Physics bugs with the pushable crates fixed - Labels on the overworld and navmaps fixed - Enabled setting of --fullscreen launch parameter from…

    Patch notes

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