Adaptations
The Lonely Mountain: Lair of Smaug the Dragon is a board game produced in 1985 by Iron Crown Enterprises, designed by Coleman Charlton which features groups of adventurers, either Dwarves, Elves, Orcs or Men entering Smaug's Lair to capture his treasure before he awakens.
"Erebor", specifically the southern spurs of the Mountain and Dale, is a playable map in The Lord of the Rings: The Battle for Middle-earth II. It has three gates, including the one Tolkien described and two which cannot be closed, to allow those playing as invading forces to easily enter the stronghold.
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