I recently went to a convention and picked up Clear the Decks which is an old timey naval combat game where 1to 4 players work together to sink an enemy ship. It has a variety of difficulties that scale from trivial to dang near impossible to beat.
If you like the theme I think it's worth checking out.
Gotta love the crazy lady living at the nursing home with Harold Zoid. Some of the best Tress Macneille noises ever.
Edit: Turns out the question was Least favorite. Thank you brain for omitting key words while reading, and having me instead post a favorite.