Terms of Service

By purchasing, downloading, or using AXIOM-EMU (“the Software”), you (“Licensee”) agree to these Terms of Service. If you do not agree, do not purchase or use the Software. AXIOM-EMU is operated by the project maintainers (“we”, “us”).

On payment, we grant you a non-exclusive, perpetual license to install, configure, and operate the Software on infrastructure you control, for the player capacity tier you purchased. The license is bound to your account and the hardware identifier(s) registered with it.

Free trial licenses are time-limited and revert to inactive at expiry. Commercial use during a trial is permitted; the trial converts to read-only on expiry until upgraded to a paid license.

Every paid license entitles you to:

• All security and bug-fix updates for the licensed major version, for the lifetime of that version.
• Direct support through the official Discord and email, with response from project maintainers.
• One free upgrade to the next major version (e.g. V1 license → V2 license at no additional cost).
• Access to the add-on marketplace; purchase of additional plugin modules at any time.
• The Software is live and ready to deploy - no waiting list, no pre-order, no early access tier.

You may not:

• Reverse-engineer, decompile, deobfuscate, or attempt to extract source code from any compiled binary.
• Remove, bypass, modify, or interfere with the licensing, anti-tamper, or activation systems.
• Redistribute the Software, in whole or in part, outside of a permitted resale (see §5).
• Use the Software to operate a service that competes with AXIOM-EMU itself (i.e. selling the files as your own product).
• Sub-license, lease, or rent the license key to multiple operators.

Violation of any restriction in this section is grounds for immediate, permanent license termination without refund.

Licenses may be resold or transferred to another individual, subject to:

• The buyer must agree to these Terms in full.
• Transfer is initiated through the customer portal; we will re-bind the license to the new account and reset hardware identifiers.
• The seller forfeits all access on transfer. A license is held by exactly one party at a time.
• You may not transfer to an account that has previously had a license terminated for breach.
• We may refuse a transfer if we have reasonable cause to believe it is being used to circumvent these Terms.

The Software is a digital product delivered immediately on payment. All sales are final and non-refundable, including (but not limited to) cases where you change your mind, your hosting setup is incompatible, you are dissatisfied with included features, or you cease to operate your server. Try the free trial before purchasing.

Setup and installation services are the one exception. These are labour, not a download, so if we are unable to carry out the work we will refund the service fee in full. That refund covers the service fee only - any license fee purchased alongside it remains non-refundable under the paragraph above, since the Software itself was delivered. A service is considered delivered once the server is running and handed over as described in §6a, and is non-refundable from that point. If you become unreachable, or do not provide the access the work requires within a reasonable period after purchase, we may treat the service as delivered.

A purchased setup service covers getting your server installed and operational, and nothing beyond that. Specifically, it covers deploying the server binaries, creating and initialising the database, activating and verifying your license key, forwarding the required ports and setting firewall rules, bringing all server processes up, and confirming that a game client can connect and log in.

It does not include configuration of game content or server identity. That means experience, drop and reward rates; item, shop and monster data; event schedules; custom content; and any website, CMS or launcher branding. Those are configured through XML, are documented in full, and remain your responsibility.

The service is a one-time piece of work and does not include ongoing administration, game mastering, monitoring, hosting, backups, or reinstallation after you change hardware or hosting provider. Requests beyond the scope above are not covered by the service fee and do not constitute a failure to deliver under §6.

Initiating a chargeback, payment dispute, or PayPal claim against a completed purchase will result in immediate and permanent termination of all licenses held by the disputing account, without recovery. The dispute does not invalidate §6.

If you believe a charge was made in error, contact us first - we respond to support requests faster than payment processors handle disputes.

Updates within a major version (e.g. V1.x) are delivered through the auto-updater and customer downloads section, included for the lifetime of the major version. We do not deprecate or paywall updates retroactively.

Each license includes one free upgrade to the immediately following major version. Subsequent major versions are offered at a reduced upgrade price to existing licensees. Major version upgrades may introduce breaking changes documented in the changelog.

Support covers installation, configuration, and bug reports for the Software as shipped. Custom development, third-party plugin debugging, and host-environment troubleshooting beyond standard requirements are outside the scope of included support.

The Software is provided “as is”. We are not liable for indirect, incidental, or consequential damages including loss of players, revenue, data, or reputation arising from use of the Software. Our maximum liability under any claim is limited to the amount you paid for the license in the twelve months preceding the claim.

We may terminate a license for material breach of these Terms, including the conduct described in §4 and §7. On termination, you must cease all use of the Software and destroy any copies in your possession. No refund is owed.

MU Online is a registered trademark of Webzen Inc. AXIOM-EMU is an independent emulator project and is not affiliated with, endorsed by, or sponsored by Webzen Inc.

We may update these Terms. Material changes will be announced in Discord and at the top of this page. Continued use of the Software after a change constitutes acceptance.

For license, support, or terms questions, reach us through the official Discord or via the customer portal contact form.