Dan's Alpha

Horizon spaceflight prototype: take off from a 5.5 km runway, climb through the atmosphere and try for orbit.

Alpha v0.1Windows 64-bit~479 MB
⬇ Download Alpha v0.1
Dans-Alpha-v0.1.zip · 502,106,503 bytes (~479 MB)

About this build

An early Unreal Engine prototype. Fly a 40 m shuttle with real gravity and finite wing lift, use the autopilot and maneuver planner, hop out and walk around after landing. No saving, menus, fuel or damage yet. It's a very early alpha, so expect rough edges.

Install & run

  1. Extract the entire ZIP into a writable folder.
  2. Double-click Alpha v0.1.exe. Keep the Engine and PlanetaryLab folders next to it.
  3. If Windows SmartScreen appears, click More info → Run anyway (the build isn't code-signed).
  4. If you get a missing Microsoft C++ runtime error, run Engine\Extras\Redist\en-us\vc_redist.x64.exe and try again.

Requires Windows 10/11 64-bit with a DirectX 12 / Shader Model 6 capable GPU and current drivers. Starts in a 1280×720 window; first load can take a while. Alt+F4 quits.

First flight

SHA-256 checksum

b0eb16b65042b710743f4e532d7f114bb48226c6f36fac4228dff18d16afb4b0

Verify in PowerShell: Get-FileHash .\Dans-Alpha-v0.1.zip -Algorithm SHA256