Here's a game I made that has been working pretty well for me. I call it "Pigs and Wolves". It doesn't seem to fit in any of the above categories so I'll just leave it here. Instructions for preparation and game rules are included in the game ppt.

Disadvantages:
-It takes prep time to print/cut the cards (maybe 2 hours depending on your class size etc, but you only need to do this once).

Advantages:
-Students like it! (Well, mine do. When they finish a game, they just start again without being encouraged)
-Good for various ages and group sizes (although I think small groups are better for this)
-Easily adaptable to any reading or vocab lesson.
-Low prep time for each lesson. Just change the mission sheet by editing sentences, or adding pictures, etc.
-Easy to explain (I've been explaining it in English/body language to elementary school kids and they get it)

Hope it works for you!

This looks great! thanks a bunch!

One question though. Why are there a dozen additional pages of numbers? I'm not sure I understand that.

How many students do you recommend in a group?

This looks really good for vocab/intonation practice, btw.

I prefer small groups because the smaller the group, the more often a student will have a turn, which means more use of the target language. So I like 2/3 students, but 4/5 still works fine.

Yeah, an obvious way of using it for vocab is to put pictures onto the mission sheets instead of sentences.