Moon RO: The Modern Classic is a free-to-play, non-commercial Ragnarok Online server offering a classic-style journey through Rune-Midgard. It uses Pre-Renewal mechanics, with a low-rate setup of 1.5x Base and Job experience, 1.5x normal card and equipment drops, and a maximum level of 99/50. The server emphasizes Zeny as its main in-game currency, limits drop rates to 70%, and supports Guild Wars, including War of the Emperium.

Moon RO features Episode 4.0 content, character balancing, and active monster skills, with further episode information covering additional classes, towns, fields, dungeons, monsters, and seasonal events. Players can download a game client for PC, Android, or iOS. The website also provides server details, item and monster databases, and a world map to help players plan their adventures. News and recurring weekend and mid-week activities keep the community informed about server events. Players can connect through the brand’s Facebook group and YouTube channel, or visit its support and server-support pages.