Blade Hunter is described as '2D side-scrolling beat-em-up action MMORPG in the tradition of arcade and console classics'. There are five games similar to Blade Hunter for Windows, Mac, Online / Web-based and Steam. The best alternative is Realm of the Mad God, which is free. Other Blade Hunter like games are Maplestory (Freemium), Aeon Rivals (Free), Elsword (Freemium) and La Tale (Freemium).
Elsword is a free-to-play, 2.5D action MMORPG that features real-time action gameplay and includes both player vs. environment and player vs. player modes. There are several playable characters within the game, each with unique backstories and distinct abilities.
La Tale is a free-to-play, massive multi-player, online role-playing game (MMORPG), with classic 2D side-scrolling action. The game features over 40 character classes, each with unique skills and weapons.