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Rheum

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Rheum screenshot 1
rheum gameplay trailerWatch trailer on Steam ↗

Rheum

SpaceMyFriend · Published by SpaceMyFriend

Positive — 81% positive (27 reviews) · 19 achievements

Last updated 27 Sept 2026

Jump down the esophagus of a body plagued by viruses and big bad bosses in this reverse vertical scrolling shoot'em up! Collect eye crusties, upgrade your pupils, and clear the screen of bullets with your cornea crushing eye blasts!

DJCTQ 6Full Controller Support

£2.49

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

3 Sept 2026Lowest: £2.49 · Highest: £2.498 Oct 2026

Action, Adventure, Indie · 2018 · More under £5 games

Navigate the twisted corridors of Rheum, an action-packed adventure where you pilot your eyes through a body plagued by viruses. Upgrade your vision and outmaneuver formidable foes in this indie gem released in 2018.

About this game

RHEUM [pronounced: room]
A mass of muscle and teeth lay dormant before you. As you inch your way closer, it comes alive. A sphincter crying for help, beckons you to descend. Your only option is down.

Travel through a fleshly vessel, as an eyeball, collecting rheum [eyeball crusties] to grow stronger in your fight against the infection plaguing this.......body. Collect eye crusties, upgrade your pupils, and clear the screen of bullets with your cornea crushing eye blasts!

FEATURES


  • Two difficulty modes
  • Unlock-able endless mode
  • Endless mode features new upgrades and challenges
  • Stack-able power ups
  • 6 playable characters to unlock
  • Secret hidden boss fights!
  • Compete for the highscore with online leaderboards!
  • A variety of enemies to combat
  • Original soundtrack
  • A plethora of bullets and eyeballs!
  • Good ol' fashioned cheat codes!
  • Full keyboard and controller support

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS: XP
  • Processor: 1 GHz or faster
  • Memory: 1 GB RAM
  • Graphics: 64mb
  • DirectX: Version 9.0
  • Storage: 140 MB available space

Recommended

Recommended:
  • OS: Win 10
  • Processor: 2 GHz or faster
  • Memory: 2 GB RAM
  • DirectX: Version 9.0
  • Storage: 150 MB available space

Supported Languages

English

Latest news

  • AnnouncementsOfficial

    I'm making a new game called Cavity Busters!

    Hello! I'm working on a new game and it's coming out on Early Access soon! https://store.steampowered.com/app/1084220/Cavity_Busters/ Cavity Busters is a rogue-lite bullet hell with fast game play. It features toothy fast combat where your main method of attack is a tooth that you shoot and suck back. Also plenty of bullets....and bodily fluids. If that matters to you. It might. But HEY! We have a demo over on our discord. Join the Discord. Play the demo. Throw up. Don't mix up the order. That's pretty important. Oh and make sure to add the game to your wishlist! :) Eye'll see ya!
    Read full article on Community Announcements (Mr Oist)
  • Patch NotesOfficial

    Clarity Update

    You awake. Your eye is blurry. You pull your tendrils up to wipe away the rheum. Things start to come into focus... This is.... THE CLARITY UPDATE! The focus of this update was to make things easier to see. For a game about eye balls, it's not very easy on the peepers. There was a lot of clutter and clashing colors. With this update, I hope clear things up :) Here's what's new: 2 new players to unlock Background art on all three levels were recolored to be easier on the eyes. The amount of red in the game has decreased A background has been added to the secret boss level Some of the enemy bullets were changed to be easier to see Decreased the amount of clutter on screen All playable characters received a color change Player UI is now displayed outside the playing area when the game is in full screen New end boss New ending cut scene New end boss music track Ultra enemies are now visually different Some of the boss attacks were changed to be a bit more forgiving Eye worm bosses health now scales to what level you encounter it on Added a level progress bar to the ui Player now starts with two bombs if they end the level with less then 2 bombs Player receives a part of a bomb when they use the shield power up on full health Shot gun player now has a long range charge shot Changed leaderboard font Endless mode was balanced out a bit 13 new endless mode upgrades were added Any secret bosses found will show up in the endless mode rotation Endless mode has a new type of upgrade shield Bugs hopefully fixed :D : Leader board shouldn't crash the game anymore (you can now see the leader boards within the community hub. Let me know if it still crashes. I've had it crash on me so I'm having a hard time figuring out whats happening) Eye worm will now die. (sometimes it would get stuck and never die) fixed a bug where the mini bosses wouldn't take damage because their health kept being reset. Plus a whole load of other little tweaks Thank you for playing! Enjoy :)
    Read full article on Community Announcements (Mr Oist)
  • Patch NotesOfficial

    1.1.4 Just a quick little update!

    hEYE! :D This is just a quick little update to add some quality of life features. First and probably most important: - A slow/focus key. (left shift, C or I) This will add some ease to some of the more tricky areas. You'll have to let me know how it feels. Too fast, too slow? -An option in the menu to flip the screen so you can have a "proper" shmup experience. It isn't perfect but it'll do the trick :) -A controls button in the options to show a list of controls. Sorry, no rebinds yet :( -A cheat button in the options menu. The game will also save any cheat codes you enter from now on. Annnnnnd that is it I think. Enjoy! :)
    Read full article on Community Announcements (Mr Oist)
  • Patch NotesOfficial

    1.1.3 Update New Boss and Playable Character

    Hello fellow eye balls! This update contains some cool new goodies :) Whats new : Brand new boss fight 4 new mini boss fights New playable character that follows suit of the above mentioned boss A new upgrade Updated some art here and there Possible fix for 1440p displays. (This one I'm not sure on. You'll have to let me know) You can now take screenshots with your standard Steam screenshot key. There's more but I forgot to keep track of the changes because I'm......near sighted ;0 Awaken the four eyes to call forth the wrath of Crown Cornea and free her children! If you've enjoyed your time with Rheum, consider leaving a recommendation as it nudges Steam to suggest the game to other people :) If you don't want to, please ignore my shameful request and keep shooting eye balls! :D
    Read full article on Community Announcements (Mr Oist)
  • AnnouncementsOfficial

    Leaderboards!!!

    This update includes leaderboards so you can compete with friends and other cool strangers! You can check the leaderboards in the main menu. There will be a fleshy skin tab that you can click on. Your local highscores wont get added. Sorry :( If you run into any issues, let me know. Setting up a leaderboard is new to me so there might be some errors. Also added an option in the option menu to clear the screen of any unnecessary text, like scores from close range kills and grazing bullets. Eyenjoy!
    Read full article on Community Announcements (Mr Oist)

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