If you like RTS-RPGs, try SpellForce 3. It's a bird's eye view multiplayer RTS-RPG for the PC available on Steam. There's no Linux or Mac support though.
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{"name": "SpellForce 3", "genres": "real-time strategy, role-playing", "player_perspective": "bird view", "has_multiplayer": "yes", "platforms": "PC", "available_on_steam": "yes", "has_linux_release": "no", "has_mac_release": "no", "intention": "inform"}
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