bottom of the barrel, don't touch that shitter: these shitters are the worst of the worst, and you shouldn't play them even if you got it for the price of a beefy crunch burrito. (about 99 cents.) games like naruto: shippuden, vampire rain, and nearly any movie-liscensed game are good examples.
mid-tier shitter: this shitter isn't a bottom of the barrel shitter, but it definitely isn't a high-quality shitter. however, this shitter CAN be enjoyed by the select few who overlook its abundant flaws. some examples of mid-tier shitters are most sonic games, the force unleashed, and jurassic: the hunted. one should only spend about $5-8 on these shitters.
top-tier shitter: a top tier shitter is a shitter that is very close to being a "goodie", but some flaws hold it back from reaching "great" status. however, one should definitely seek out top-tier shitters. they're fun, and the best of the bunch have full co-op campaigns, THOSE are the top of the heap shitters. games like hunted: the demon's forge, F.3.A.R., prey, and syndicate can all be considered top-tier shitters. one may spend an upwards of $15 on these shitters, making them quite pricey.