"Custom Equipment" refers to unique items designed exclusively for your server. These items are not part of the official Ragnarok Online database and are often tailored to enhance gameplay, promote balance, or introduce new mechanics.
"Custom Skills" are unique abilities introduced on your server to expand gameplay mechanics or balance classes. These skills are tailored to fit your server's vision, whether enhancing PvP, PvE, or specific roles.
"Custom Instances" are unique dungeons or areas designed to provide challenging and rewarding experiences. These instances are exclusive to your server and often feature custom monsters, mechanics, and storylines..