MUOnline.ai

MUOnline.ai is a Season 21 MU Online project offering a Permanent Realm and a separate seasonal Speed Realm. The permanent world runs at x5000 EXP with a maximum of 60000 points per statistic, while the Halloween Speed Realm uses x99999 EXP for accelerated progression. The server includes sixteen playable classes, including Alchemist and Crusader. Players can improve equipment, obtain jewels, hunt bosses and develop characters through resets and Grand Resets. Available activities include Blood Castle, Devil Square, Crywolf, Castle Siege, Guild Battle and special boss encounters. The October 2026 update added additional drop sources for Vibrant Jewels, including events, advanced maps and Land of Trials. The Halloween Speed Realm opened on October 23, 2026, with starting equipment and a temporary progression race. When the season ends, players can transfer a limited number of characters to the permanent world under the published transfer rules. Both worlds use the same Windows client and account system. Register on the website, download the launcher and choose your preferred realm. The project also provides guides, rankings and access to its community Discord.