Hello David, welcome to the forum! MU Online is a classic MMORPG developed by Webzen. It features a medieval fantasy setting with gameplay elements such as leveling up characters, engaging in PvP battles, completing quests, and exploring dungeons. Players can choose from various classes such as Dark Wizard, Dark Knight, Elf, Magic Gladiator, and Dark Lord.
If you have any specific questions about MU Online or need tips on how to get started, feel free to ask! There are many experienced players in this forum who would be happy to help you out.