House of the Dead 3 is the entertaining enough for anyone to get to grips with.
The good points of this game are that there is much more variety of enemies, as well as your gun now being a Shotgun, which helps alot. It is also very very easy to get to grips with, and isn't hard to understand what you have to do.
The bad point about the game is that some bosses do seem easier (the 2nd encounter with the Cop Guard Zombie), and eventually make it boring and not entertaining at all.
House of the Dead 3 is a good game, that any Light Gun Shooters should play.