The newest Sonic the Hedgehog game in the long-running (get it?) series, Unleashed combines cutting-edge graphics with innovative gameplay and a new character in the form of the Werehog. During a fight with his Nemesis Dr.Robotnik, Sonic is captured, and his Chaos Emeralds are drained to...to be honest i can't even remember, the story is pretty stupid, but the game is fun.
-Cons: During the levels you will have to collect Sun Medals and Moon Medals, which unlock later levels in the game. This is tedious and unnecessary, breaking the flow and forcing you to replay older levels and search through the (semi) free-roam zones. You will frequently find yourself unable to progress because you need more Medals.
The WereHog levels will bore you to tears, a cheap knock-off of God of War that slows the fast-paced game to a crawl. These levels are NOT optional, and to unlock more Sonic levels you will have to play WereHog levels.
-Price: The game is still hovering at around 50€/$ in stores, but used copies can be found at around 20-30€/$, do not expect a high price if you plan to sell the game, if you're lucky you could get around 10€/$ for it.