Ren'Py web build
Eternum
Eternum is one of the largest adventure visual novels in this genre and it is running on this page. Not a link out, not a download, not a page telling you where to find it. Build 0.7.5, in the tab you already have open.
Plays on this page. We host the build, so there is nothing to install and nowhere to go. Checked on 2026-08-11.
- Engine
- Ren'Py web build
- Build
- 0.7.5
- First load
- 69 MB, measured
- Released
- 2021
- Price
- Free to play
- Runs in a browser
- Yes, on this page
Loads on tap. Nothing downloads to your device.
What happens when you press play
The button above swaps in the game. Before you press it, this page has downloaded nothing beyond its own text, which is deliberate.
On the first launch your browser pulls 69 MB. We measured that rather than guessed it: 36.8 MB of game data, a 17.7 MB WebAssembly engine, 15.9 MB of runtime data and a 387 KB loader. On a good connection that is under a minute. On mobile data it is a real download, and you should know that before you start rather than halfway through.
After that first load it comes from your browser cache, so coming back later is close to instant. The cost is paid once.
Why a visual novel weighs that much
Nearly all of it is art. A game like this ships thousands of rendered images, and rendered art does not compress the way text does. The engine itself is a fixed cost of about 33 MB no matter which game you load, which is why a small game and a large one are closer in size than you would expect.
This is the honest trade behind the whole genre. Text games load instantly because a paragraph weighs nothing. Rendered visual novels look the way they do because they carry the weight. Neither is the wrong answer, and now you can pick knowing the number.
Saves, and the thing nobody warns you about
Ren'Py web builds keep saves in browser storage, which means clearing your browsing data deletes them. That has cost people entire playthroughs.
The good news is that this build ships with save import and export built into the engine menu. Exporting writes a file to your device that survives anything your browser does. It takes a few seconds.
Do it once when you reach somewhere you would be annoyed to lose. That single habit is the difference between a browser game being convenient and being a liability.
On a phone
It runs. A Ren'Py web build is a canvas and the controls are taps, so nothing here needs a keyboard.
Two things to plan for. The first is that 69 MB on mobile data, which is worth doing on wifi if you have the choice. The second is memory: phone browsers reclaim memory from background tabs, and a loaded game is a large tab. Switch away for long enough and it reloads.
The fix for both is the same as on desktop. Export a save early, and the reload costs you nothing but the wait.
Eternum, answered
Do I need to download Eternum to play it here?
No. The game runs inside this page. Your browser fetches the build to run it, the same way it fetches any web page, and nothing is installed on your device.
How long does it take to start?
The first launch pulls a measured 69 MB. Under a minute on a good connection, longer on mobile data. After that it loads from cache.
Which version is this?
Build 0.7.5. The version is part of the build we serve, so what you see here is what you play.
Will I lose my save?
Only if you clear your browsing data without exporting first. The engine menu has save export and import built in, and an exported save is a file on your device that nothing in your browser can touch.
Does it work on iPhone?
Yes. Safari runs WebAssembly and Canvas, which is everything this build needs. Watch the first load on mobile data.
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Eternum sits in Free Porn Games along with everything else we have checked. If you are on a phone, the mobile page filters the catalogue down to what genuinely works in your hand.