ASPaper for Minecraft 1.21.9
11 builds of ASPaper published for Minecraft 1.21.9, newest first. Every download links to the project’s own release.
- Latest build
- #16800
- Java required
- Java 21 or newer
- Builds
- 11
- Newest published
- 6 Oct 2025
ASPaper builds for 1.21.9
Newest first. The checksum is the project's own, where it publishes one.
| Build | Channel | Published | Size | Download |
|---|---|---|---|---|
| #16800 | beta | 6 Oct 2025 | 57.4 MB | server.jar |
| #16799 | beta | 6 Oct 2025 | 57.4 MB | server.jar |
| #16798 | beta | 5 Oct 2025 | 57.4 MB | server.jar |
| #16797 | beta | 5 Oct 2025 | 57.4 MB | server.jar |
| #16796 | beta | 4 Oct 2025 | 57.4 MB | server.jar |
| #16795 | beta | 4 Oct 2025 | 57.4 MB | server.jar |
| #16794 | beta | 3 Oct 2025 | 57.3 MB | server.jar |
| #16793 | beta | 3 Oct 2025 | 57.4 MB | server.jar |
| #16792 | beta | 3 Oct 2025 | 57.3 MB | server.jar |
| #16790 | beta | 30 Sept 2025 | 57.3 MB | server.jar |
| #16789 | beta | 30 Sept 2025 | 57.3 MB | server.jar |
ASPaper on 1.21.9: common questions
Does ASPaper support Minecraft 1.21.9?
Yes. 11 builds have been published for 1.21.9, the newest being build 16800. This is not a declared claim: each build below is a real file the project released for this version.
Which Java version do I need for ASPaper 1.21.9?
Java 21 or newer. The requirement comes from Minecraft 1.21.9 itself rather than from ASPaper, so it applies to any server software running this version. A newer Java than that is fine.
Which ASPaper build should I run on 1.21.9?
The newest one, build 16800, published 10 mo ago. Later builds for the same Minecraft version are bug fixes and performance work, so there is rarely a reason to run an older one deliberately.
Is this download official?
Yes. Every link points at ASPaper's own release or API. MCReference does not mirror, re-host or repackage a jar; where the project publishes a SHA-256 we show it so you can verify the file you got.