Downloading the game
First you must download the game before you can host a server. Keep in mind not all of our games are available for download.

• Open BYOND(Path usually "C:/Program Files/BYOND/bin/Byond.exe")
• Login(Sign up if you don't have a key yet)
• Click File > Open Location... and type in "Kajika.DuelMonstersOnline"

Alternatively, you can visit the Hub Page for the game, there will be a download link there, if there is no download link that game is not available for download.

Note: Download may be down at times, if you recieve an error "Unzip failed!" try again later.

Hosting
BYOND games may be hosted in one of two ways, using the DreamSeeker program or using DreamDaemon. If you only want to host for a short period of time, the former is sufficient, however, if you are going to host often and for long periods use DreamDaemon, which is a program specifically for hosting.

• Download and run the game
• Click the button labelled "Host..." in the lower right hand corner of the DreamSeeker window
• Select your options and click "OK"

• Open "dreamdaemon.exe"(Path usually "C:/Program Files/BYOND/bin/dreamdaemon.exe")
• Click "File > Open" then locate duelmonstersonline.dmb(Path usually C:/Program Files/BYOND/users/(your name)/MyHub/kajika/duelmonstersonline/duelmonsters/duelmonsters.dmb") select this file and click "Open"
• Set the options(see below)
• Once the options are set, click "Go" in the bottom right corner, this will begin hosting the game

Note: You will be able to log into your game by opening DreamSeeker and then go to "File > Open Location... > (insert port)" or "byond://(yourip):(port)"


Port: This is the port you will host with. You may need to configure your router or firewall to allow connections through this port. If you are unsure use "0" and BYOND will assign a randomly unused port. Do not use ports lower than 1000 unless you know what you're doing.
Visibility: If you want others to see your game select "Public", "Private" will only let players on your pager see you are hosting, "Invisible" will not display the game on the hub at all.
Security: Set this to "Safe" or "Ultrasafe". "Safe" allows the game to access files in the same directory or higher, "Ultrasafe" will prompt you whenever a file is accessed. "Trusted" allows access to any files on your computer, this mode is not recommended unless you trust the game.


Hosting problems
If other players are unable to login your game and recieve a "" error, it could be one of the reasons below

If you have a firewall, it may be blocking access to DreamSeeker/DreamDaemon; check your firewall settings to allow it to act as a server.
You will have to check your manual to do this, each firewall is different and it cannot be covered here.
DO NOT disable your firewall completely to host a game, your firewall is important to your computers security.


A router must be properly configured to allow a certain port to be open, in this situation you will need to configure your router to allow DreamSeeker or DreamDaemon to use an open port.
Consult your Router Manual for details. As a general rule, use a port above 1000; you may also have to manually set the port from the steps above if you have a router.
If all else fails ask on the BYOND forums.


Links
If the above information didn't solve your problem try the below links for more information.

BYOND Networking
Network Security And BYOND
Portforward.com - Provides instructions on configuring your router for BYOND.