Battle for the Realms mod for Half-Life 2

BFTR is a third-person action game where you are able to take the role of a traditional role-playing class, take sides, and duke it out on a map tailored after a location in the Forgotten Realms.

Fling spells as a wizard, or duke it out as a warrior. Sneak behind foes and backstab them as a rogue, or shoot them from afar as a ranger. Each class can choose weapons that fit their playing style, and each class has unique abilities that, as you gain levels, become more and more powerful. Play on servers made for your level to even the playing field.

There are two types of play; Siege, and Team Deathmatch. Siege has players on one team assaulting the opposing teams castle, and vice versa. Team Deathmatch has players killing the members of the opposing team on even grounded-maps.