Monster Hunter takes some time to get into, as you gradually work out how to avoid getting a rag-clad peasant eaten by massive dinosaurs over hours of grind, but rewards patience with hours of wonderful adventuring. Tracking and killing monstrous prey never gets old, while you'll get a real sense of accomplishment from crafting everything you own. Be sure to play online or locally with 3DS versions for the full effect - it's all in our Editor's Choice review.
Zavvi are selling it for a paltry £16.99, which is cheap as chips. Thanks to luciferslux @ HUKD for the great spot!