Medivia Online is a massively multiplayer online role-playing game that has been running continuously since July 2011. Set in an original medieval fantasy world, it uses classic 2D graphics with an oblique projection, stacking multiple floors on top of one another so that dungeons sink below the ground while towers and rooftops rise above it - a simple presentation that hides a surprising sense of depth. Players pick one of four professions and shape their character through old-school, open-ended progression: hunting monsters, training individual skills, completing more than 200 quests, and aligning with factions that unlock their own storylines and rewards. Death is punishing, the economy is player-driven, and guilds, seasonal events and PvP battles keep the shared world in motion. The game runs on several worlds with different progression rates, hosting thousands of active players every day with peaks of more than two thousand online at once. Medivia Online is developed and published by the Polish studio COMADSOFT, is free to play, and is available on Windows, Linux and macOS.