my favorites

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  Clone Wars: Equestrian Wars A crossover of MLP, Star Wars, and Clone Wars set before and during Episode II-III. Character and plot suggestions welcome! by Pun System 15,051 words · 16 · 4
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  Ponies and Lasers and Clankers, Oh My! Battle droids left without orders stumble upon Equestria, its neighbors, and all of the planet's inhabitants. Hilarity (and droid clumsiness) ensues. by Tekket 78,053 words · 271 · 6
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  Toy Soldiers Equestria gets an unexpected delivery... by est-hal 6,297 words · 95 · 2
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  The Tirek Who Tolerated Me For most humans, being sent to Equestria and put into the body of a megalomaniacal centaur trapped in the depths of Tartarus would be the most bizarre thing that ever happened to them. For a certain knife-wielding mercenary, it was Tuesday. by Kotatsu Neko 128,449 words · 1,428 · 15