Compare Rheum prices across trusted key stores and find the best deal. Developed by SpaceMyFriend. Published by SpaceMyFriend. Released on 5/22/2018. Available on PC. Genres: Action, Adventure, Indie.

Piloting an eyeball through a diseased human body sounds like a fever dream, and Rheum leans into that premise with enough pixel grotesquerie and bullet-dodging tension to make the sub-five-dollar asking price feel like a no-brainer for shmup fans.

My first instinct when I loaded Rheum was to laugh, and then immediately to die. That combination is probably the most honest summary of what SpaceMyFriend made here: a reverse vertical-scrolling shoot-em-up that drops you, as a literal eyeball, down through the innards of an infected body, demanding sharp reflexes before you have fully processed what you are looking at. The aesthetic is all fleshy pinks, wet reds, and squirming biology, and it commits completely. If the concept makes you queasy, that is intentional, and it is honestly part of the charm. The mechanical loop is tight and focused. You descend through levels that scroll downward rather than upward, a small inversion that still feels fresh inside a genre built on vertical traditions. As you push deeper, you collect rheum - the eye-crust resource that acts as your upgrade currency - spending it to power up your pupils and strengthen your shot. The cornea blast is your panic button: a screen-clearing burst that detonates incoming bullets and gives you a half-second to breathe. Learning when to spend that blast and when to save it is essentially the whole game. Stackable power-ups layer on top, letting bullet density climb to the point where the screen becomes a genuine puzzle of geometry. Boss fights punctuate the levels, and there are secret encounters hidden beyond the standard path for players willing to explore. Online leaderboards and cheat codes that increase difficulty give the whole thing surprising replay legs for something this compact. Where Rheum is modest is in scope. Three structured levels plus an Endless mode, six unlockable characters in the paid Steam version, and a runtime that any competent shmup player will measure in minutes rather than hours. The developer is transparent about this - the game started as a free jam project and evolved into a small but complete experience. That honesty is part of what makes it feel trustworthy. The original soundtrack rewards headphone listening; the sound design leans into the body-horror setting with wet, organic audio that is more evocative than it has any right to be at this resolution. Some players in the itch.io community noted the pixel art as genuinely beautiful despite - or because of - the gross palette. The ceiling here is the game's small stature. Dedicated shmup veterans who count bullet patterns in their sleep will exhaust the core content quickly, and the character variety, while present, does not dramatically shift the strategic feel the way class systems do in deeper genre entries. The difficulty curve also has occasional rough patches where the bullet geometry stops feeling designed and starts feeling random. These are small complaints inside a package that otherwise shows real craft and a clear aesthetic vision from a solo developer. Rheum is worth picking up if you appreciate handmade indie weirdness and can respect a game that knows exactly what it is: a gross, punchy, high-concept shmup that does not overstay its welcome. It fits the same curious affection as a late-night arcade cabinet nobody else is playing. Small, strange, sincere, and good at what it does. Kai, Scout Team

Rheum

Rheum

May 22, 2018SpaceMyFriend
GamerScout Says

Piloting an eyeball through a diseased human body sounds like a fever dream, and Rheum leans into that premise with enough pixel grotesquerie and bullet-dodging tension to make the sub-five-dollar asking price feel like a no-brainer for shmup fans.

PC
Best Price Available
€0.67
at Kinguin
Lowest tracked: €0.67
Track this price

GamerScout Verdict

Worth it for shmup fans who want a short, grotesque, mechanically honest arcade hit with genuine handcraft behind it.

Compare Prices(3 stores)

KinguinBest price
StandardGlobalSteam KeyKey
€0.67
Priced in EUR by the store
Buy
StandardGlobalSteam KeyKey
€1.00-67%
Priced in EUR by the store
Buy
StandardEurope (EU)Steam KeyKey
€1.07
Priced in EUR by the store
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StandardEurope (EU)Steam KeyKey
€2.99
Priced in EUR by the store
Buy

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Price History

Lowest tracked
€0.6724 Aug 2026
Current best
€0.67
Lowest since we started tracking
Keyshops
€0.63€0.76€0.90€1.036 Jun29 Jun22 Jul13 Aug5 Sept
6 Jun — 5 Sept
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Screenshots & Media

About Rheum

My first instinct when I loaded Rheum was to laugh, and then immediately to die. That combination is probably the most honest summary of what SpaceMyFriend made here: a reverse vertical-scrolling shoot-em-up that drops you, as a literal eyeball, down through the innards of an infected body, demanding sharp reflexes before you have fully processed what you are looking at. The aesthetic is all fleshy pinks, wet reds, and squirming biology, and it commits completely. If the concept makes you queasy, that is intentional, and it is honestly part of the charm. The mechanical loop is tight and focused. You descend through levels that scroll downward rather than upward, a small inversion that still feels fresh inside a genre built on vertical traditions. As you push deeper, you collect rheum - the eye-crust resource that acts as your upgrade currency - spending it to power up your pupils and strengthen your shot. The cornea blast is your panic button: a screen-clearing burst that detonates incoming bullets and gives you a half-second to breathe. Learning when to spend that blast and when to save it is essentially the whole game. Stackable power-ups layer on top, letting bullet density climb to the point where the screen becomes a genuine puzzle of geometry. Boss fights punctuate the levels, and there are secret encounters hidden beyond the standard path for players willing to explore. Online leaderboards and cheat codes that increase difficulty give the whole thing surprising replay legs for something this compact. Where Rheum is modest is in scope. Three structured levels plus an Endless mode, six unlockable characters in the paid Steam version, and a runtime that any competent shmup player will measure in minutes rather than hours. The developer is transparent about this - the game started as a free jam project and evolved into a small but complete experience. That honesty is part of what makes it feel trustworthy. The original soundtrack rewards headphone listening; the sound design leans into the body-horror setting with wet, organic audio that is more evocative than it has any right to be at this resolution. Some players in the itch.io community noted the pixel art as genuinely beautiful despite - or because of - the gross palette. The ceiling here is the game's small stature. Dedicated shmup veterans who count bullet patterns in their sleep will exhaust the core content quickly, and the character variety, while present, does not dramatically shift the strategic feel the way class systems do in deeper genre entries. The difficulty curve also has occasional rough patches where the bullet geometry stops feeling designed and starts feeling random. These are small complaints inside a package that otherwise shows real craft and a clear aesthetic vision from a solo developer. Rheum is worth picking up if you appreciate handmade indie weirdness and can respect a game that knows exactly what it is: a gross, punchy, high-concept shmup that does not overstay its welcome. It fits the same curious affection as a late-night arcade cabinet nobody else is playing. Small, strange, sincere, and good at what it does.

Kai
Kai · Scout Team

Indie & narrative

Tags

singleplayerachievementscontroller-supporttier:sub-5Body HorrorReverse ScrollingHighscore ChasingEndless ModeOrgan AestheticCornea BlastUnlockable CharactersSecret Bosses

System Requirements

Minimum

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

Recommended

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

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Game Info

Developer
SpaceMyFriend
Publisher
SpaceMyFriend
Release Date
May 22, 2018

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Frequently asked questions about Rheum

How much does Rheum cost?

As of 5 September 2026, the cheapest in-stock offer for Rheum is €0.67 at Kinguin, out of 4 live offers we track across verified key stores. Prices change daily — the table on this page is refreshed continuously.

Where can I buy Rheum cheapest?

The lowest in-stock price we track for Rheum is €0.67 at Kinguin (5 September 2026). We compare 4 live offers from verified key stores — the full table with every store and its trust score is on this page.

What platforms is Rheum available on?

Rheum is available on PC.

When was Rheum released?

Rheum was released on 22 May 2018.

Who developed Rheum?

Rheum was developed by SpaceMyFriend.