Try Not To Laugh Too Hard, But What Should I Get?

Alright, I know you guys are going to laugh your butts off when I share this with you. So, I'm ready foryou to laugh and think how pathetic this question may be...Just give me some good advice okay? heehee!

I have a PS3 and I cannot seem to get through the first part of COD or any other Action Adventure, First Shooter game due to the fact that I'm 40 years old and I just can't remember all the dang combinations on my controller. So, with that said. I would like for you guys to think back to the DS Lite and think of a game that most of you would blow through in an hour. Everyone is new at one time or another and this time it's me. I really like Left 4 Dead and other games where the story is pretty simple, but the controls are also simple. I'm looking for something that has a "teen or MATURE" rating. I also like zombies and war games. I WOULD LIKE SOMETHING IN A 3D WITHOUT USING THE STYLUS. I realize that there are A LOT of games out there, but there must be something for us newbies. I like horror games, zombies, fantasy (but, not for kids) and shoot em' up War games. So, my Gamespot source....What should I get? Thanx for your help once again!

BTW, I did look under The DS Recommendation Thread---What Game Should I Get? It took me quite some time to get through all those threads. However, my question is specific and I couldn't find the answer there. I did my best to go another route and not start a new thread.

Metal Slug 7 is simple arcade shoot em up fun. Also New Super Mario is fun andawesome and doesn't use the stylus at all.

A best for a 40yr old pokemon p new/p/d or mario kart

Dementium. It is a FPS/Horror game, then maybe resident evil or contra.

Metal Slug 7 is simple arcade shoot em up fun. .

LAboy06

Contra 4 gameplay is "old-school" and fairly simple.

However the game is hard.