Ryvakai

06 — Download

Take the build apart

There is nothing to buy and nothing to sign up for. What is published here carries the checksum computed from the real file at publish time, and this page reads that manifest rather than repeating numbers typed into HTML.

No public build

There is nothing to download yet

When a playable client is published, this panel fills itself in from the publish manifest with the real version, size, date and SHA-256, and the launcher will tell you the same thing in the same words. We would rather show you an empty panel than a download button that leads to last month.

Get told when it lands

Latest playable build

0.1.0-alpha.7

Pre-Alpha

Camera update: mouse up now looks up (fixed inverted vertical), snappier camera speed, and you can tune camera speed and inversion live from the in-game console (Ryv.Camera.SensitivityX, Ryv.Camera.SensitivityY, Ryv.Camera.InvertY).

Published
19 August 2026
Size
459.4 MB
Platform
Windows 10/11 · 64-bit
Price
Free
Download the launcher Direct client .zip

The launcher installs and patches the client, keeps everything under your local app data rather than beside the executable, verifies every download against the publisher’s hash before calling it installed, and writes a plain-text transcript you can attach to a bug report. Launcher 0.3.1, 7.60 MB.

Verify it yourself

Hash the file you actually downloaded and compare. Do not take this page’s word for it either — a compromised page would happily print a matching hash. If the two disagree, delete the file rather than assuming the download was interrupted.

SHA-256 · RYVAKAI-0.1.0-alpha.7-Win64.zip

6ca083ca93a60bf31895446ca7fc8b23a971f679977403648fc9575c635f1b58

  • Windows certutil -hashfile "RYVAKAI-0.1.0-alpha.7-Win64.zip" SHA256
  • macOS shasum -a 256 "RYVAKAI-0.1.0-alpha.7-Win64.zip"
  • Linux sha256sum "RYVAKAI-0.1.0-alpha.7-Win64.zip"

Read this before you download

The published client is a movement lab: one grey-box test level built for traversal feel — sprint lanes with distance markers, jump blocks, mantle ledges, slopes, a wall-run gallery and a slide ramp. It is not the open world, there are no quests, and the coast you can see in the concept art is not in it. The point of downloading it is to tell us how it moves.

Known issues in this build

  • Crouch leaves the character floating

    In the public build

    In the published build, pressing crouch once lifts the character off the ground permanently — the mesh offset is rebuilt from a class default that was never set, so it does not come back down on release. The fix is written and reasoned from engine source, but it is not in a published build yet, so it is still live for anyone who downloads today.

  • Ember Arc spends Veil and spawns nothing

    In an internal candidate

    In the current internal candidate the cast succeeds and the cost is paid, but no projectile body appears. It is a regression against the previous candidate, it is tracked, and it is why that candidate has not been published.

  • No dedicated server

    Not built yet

    Sessions are listen servers: one player hosts and is the authority. If the host leaves, the session ends. Dedicated servers need a source-built engine and are roadmap work.

  • Characters may be wiped between builds

    Expected, by design

    The save schema is still moving. Assume every test character is disposable. When wipes stop being routine, this line changes.

Installing it

  1. Download and run the launcher

    It installs to your local app data rather than beside the executable, so it needs no administrator rights and does not scatter files across Program Files.

  2. Let it fetch the client

    The launcher reads the same publish manifest this page does, downloads the newest playable Windows build, and checks the bytes against the publisher’s SHA-256 before it calls the install finished.

  3. Play, and keep the transcript

    The launcher writes a plain-text log of everything it did. When something goes wrong, that file plus the build version is most of a usable bug report.

  4. For multiplayer, find a second person

    Sessions are listen servers: one of you hosts and is the authority for the session, and the host needs outbound UDP 7777 open. If the host leaves, the session ends.

What you need to run it

A target envelope, not a benchmark. No cooked client has been profiled across a range of machines, so this will be replaced with measured numbers when it has been. For reference, a packaged run measured 55.6 to 59.0 frames per second on our own build machine.

Operating system
Windows 10 or 11, 64-bit
Graphics
Discrete GPU with DirectX 12
Memory
16 GB RAM
Storage
SSD, with room for the unpacked build
Network
Outbound UDP 7777 for multiplayer
Input
Keyboard and mouse

Windows x64 is the only platform. There is no macOS, Linux or console build, and none is planned for v0.1.

Building it yourself

The source bundle is the whole Unreal project — C++ modules, build targets, configuration and documentation — with no cooked content and no binaries. It is not a playable build. Building it needs Unreal Engine 5.8.1, Visual Studio 2022 with the C++ workloads, a real GPU, 32 GB of RAM and roughly 150 GB of disk once derived data is accounted for.

Source bundle 0.1.0-alpha.1 0.6 MB