My coach used to have all these different conditioning "Games". We had one called marathon (which took up the whole gym)--we'd be in partners and while one partner did an exercise (there were 4 different exercises--15 of the exercise the first time around and 25 of it the 2nd lap) the other partner had to jog, then while once the partner was finished the exercise they had to run a lap around the gym and while they were running around the gym the other partner had to do sprints on the floor.
There was also TumbleTrak strength, which consisted of doing step ups, pushups, ab hold, etc on the tumbletrak.
Pyramid: consisted of runing shuttle runs (suicides) across the floor and those were timed and we had to "beat the clock"---it would be 4 laps of shuttle runs then a series of pushups (done to the coach's count and pyramid style (1,2,3,4,3,2,1--sometimes up to 5). Then 3 laps of shuttle run and abs, 2 laps and legs, then 1 final lap.
Serpentine (really hard to explain without showing) but it consisted of running zigzags across the floor then sprinting done the sides in laps (2,4,6,8,7,5,3,1) with laps 2 and 1 being power jumps. After the various numbers of laps there were arm, leg, and stomach exercises--25 reps.
Sprints--we had to sprint laps on the floor (down and back) and beat the clock. We'd start with 8 laps, then 7, then 6, etc.
Geez, I could go on forever with conditioning "games" that we'd do, but I enjoyed conditioning so it's all good. One thing I liked was the fact that many times my coach would be looking for quality work, and if he liked how you were performing the exercises he'd let you be done while everyone else had to keep going.