As being a Casual Gamer, I found London Tourist very fun to play. Before that I completed my 1st mission in 20 minutes.

User Rating: 9.5 | Gangs of London (UK) PSP
This game appeared of interest to me because it has my "tastes" in games, though I'm a Casual Gamer. I started off playing the Billiards in the Pub, and joined the EC2 to complete my first mission, after completing the tutorials. And then, I found London Tourist... I just found all of the landmarks and am in progress for finding all of the secret signs. I think I have only 10 remaining. Free Drive is interested, in that I can elude the police and enter a gun battle with them. I think that can assist in "training" in completing the gang missions. I also see Gang Battles, which I can assume are separate missions, aside from the game's Story Mode. Speed Trap reminds me of the Speed movies.Others, I haven't played yet. I'm just trying to complete London Tourist, first. Despite low ratings, I really enjoy this game a lot.