If you remember yourself spending some fun time with the Virtua Cop titles, Ghost Squad might be worth a closer look.
The original arcade Ghost Squad was released in 2004 for the Chihiro board.
There's not too much depth story-wise (well, it's an arcade game after all). You are a member of the Ghost Squad, which is a special forces unit fighting terrorism and crime, and typically all you have to do in a light-gun shooter is to pull the trigger whenever a foe is stupid enough to jump right in front of your barrel, since movement is completely automatized.
Whether you play with the Wii Zapper or just your standard remote, the controls are spot-on and make for a convincing arcade feel.
To keep things from getting too monotonous, the game occasionally offers multiple paths to choose from and incorporates some simple quick time events such as dismantling bombs/mines or defeating armed enemies in close combat.
The huge downside of Ghost Squad is its shortness. You can blast through the three levels in 20-25 mins. I guess that SEGA wanted to stay true to the arcade original, but for a console port that wants to offer more than just short-term satisfaction they should have included at least two more stages.
At least new paths, weapons and costumes get unlocked for every successful runthrough; you can also put on the Virtua Cop outfit for that nostalgic vibe.
In comparison to its arcade pendant (which wasn't graphically stunning either) the Wii version looks a little worse. The visuals are carried by nice vibrant colors, but the character models and facial expressions are pretty cheap, nothing a Dreamcast could not have been capable of.
The voice acting comes off charmingly cheesy, sound fx are decent and the music consists of electronic beats that you won't care about.
In conclusion Ghost Squad is the Wii's best light-gun shooter to date and a really fun experience while it lasts. Lifespan is slightly extended by unlockables (costumes, weapons, the hilarious Paradise and Ninja modes) and the inclusion of a 4-player mode is a cool thing. Virtua Cop and arcade enthusiasts should definitely check it out, especially since it retails for about 20 dollars now.
Graphics: 6/10
Sound: 6.5/10
Gameplay: 8/10
Lifespan: 6/10
Overall: 7.5