This is my experience of most cadets, sure I've seen a few who had their heads screwed, on but the vast majority have been as useful as tits on a nun.
To get back on topic, I tend to prefer the more simple games as there's always one who doesn't understand what's going on (usually because they didn't pay attention in the briefing). One that stands out to be was where one team had a bag of 3 "bombs" and had to get the bomb carrier to 3 locations to "demolish" targets. Only the designated player could carry and plant the bombs and the way the 3 targets were spread out it meant you could be engaged from any direction