The House of the Dead: Overkill
Overkill has more than a bit of charm in its grindhouse aesthetic and notorious profanity. Where other light-gun shooters are simply too stupid to take seriously, this one actually makes its ludicrous premise fun and entertaining. On the other hand, it is still just a light-gun shooter; don't let the home console setting fool you: it's just as long (which is to say, short) as an arcade House of the Dead. Other than the - fairly limited - weapon upgrading options, there really isn't much here at all. Fun in a party setting, but still doesn't seem worth the investment.
Progress: Finished normal in co-op