Wolfenstein: Enemy Territory

As for maps there is a good variety from regular World War 2 battlefields to user created maps that resemble houses! Map layouts aren't normally very large and can be figured out, layout wise, fairly easily. There are different types of missions on each map, such as deathmatch and campain/objective, the latter showing up the most often. In campain all you do is figure out objectives which might be demolition or capture this, so its fairly easy to get a handle on.

Very great game