I like them all, but I must say Ghost squad is the only one that kept me coming back time and again after I completed it several times, because each time would unlock different routes and objective, plus it's getting gradually harder.
I was really addicted to it untill I reached level 8 or 9 for each mission !
I really liked RE Umbrella, but once I finished it , I had litte interest in coming back.
I thing they did a great job in providing a good value for the Wii version of Ghost Squad.
Graphically I prefer HoTD 3 though.....
I really enjoyed Ghost Squad and House Of The Dead. What can I say, Sega makes good on Rails Shooters. HOTD is cool, because you will always find new things each time you play. Such as different routes, and hidden items.
They all have fun co-op modes but Ghost Squad has the best co-op, definitely. HOTD2&3 are fun, especially if you've never played them before, are a decent length and have a bit of replay value. Ghost Squad is quite short but has lots of replay value, as well as party modes and online scoreboards. Umbrella Chronicles is kinda wierd as it's pretty slow for a lightgun game and the aiming seems off, you'll like it way more if you're a Resident Evil fan though.
The new HOTD game comes out in a couple of months and looks like it'll be the best game of the lot.
Yea like everyone else said, just get RE:UC, Ghost Squad and HOTD. Oh yea, that WiiWare Western shooter game is also fun. Me and my girl are the same way, we love out shooters.
As much as I love the gun add-ons, the only one I tried it for and liked it was Ghost Squad, I did try RE but the lag between the wiimote and the onscreen cursor was just to bad for me, I'm way better with just the wiimote. Have'nt tried it with HOTD tho.
I've tried the three of them and UC is definately the best game.
It's longer, looks better, has lots of weapons and the best story.
The other two are really arcadey which is great. Ghost squad is the shortest with only 3 main levels, but as you level up each run is a tad different with many branching paths...
As of HotD.. it's really awesome to shoot zombies in the face... definately the hardest of the 3... 2 games in one which is cool and the cheesy story is awesome...
I'm really torn to which recomend...
But keep an eye on HotDverkill.. that one is looking to be a great great game.. the hardcore you've been waiting XD