If you have not checked out One Thumb Mobile’s 3D MMORPG Celtic Heroes for Android and iOS devices, perhaps now would be an excellent time to do so. The developers are celebrating Halloween by releasing a tonne of new content, for FREE! For those who are uninitiated, Celtic Heroes is a free-to-play, fully 3D MMORPG which connects hundreds of thousands of players from around the world as they adventure together in Celtic lands to become Celtic Heroes.

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Playable over Wi-Fi and mobile connections, Celtic Heroes gives players the opportunity to explore and discover an expansive virtual world based heavily on Celtic mythology. Those who venture into the detailed and vibrant world will experience a fully-fledged handheld MMORPG unlike any other.

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The new content update, titled Samhain: Web of Urchaid, features a massive battle against the devilish schemes of the great spider Urchaid—which has vowed to create hundreds of slaves out of unsuspecting humans. Players will also come face-to-face with Urchaid itself, Grath the Ugly and its fellow spider bosses, the once-human spider lords and their vanguards of arachnid servants, wandering Samhain witches, and a variety of new content including brand new bosses and epic raid loot, Samhain Mystery Chest with exclusive bat mount, masks and fashion, and Fiendish Quests and Dailies.

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After updating, players will be free to join the festivities of Samhain and purchase new Mystery Chests filled with Samhain festival fashion, scary masks, spider-themed instruments—and the Nightflyer, an incredible new Bat Mount.

Click here to download the iOS version of the game, and here to download the Android version of the game.