D&D 5E Random encounter - Team games

Dear ENworlders:

So I'd like to have a random encounter with two teams of townspeople playing a game of (football, field hockey, lacrosse, insert random made up team game here). The characters would be asked to join in or, ideally, have to referee the game.

That being the case, does anyone have any simple rules for such games? It's just a random encounter, so the simpler the better.

Thanks for any help.

--Scott

I had a drinking game in my campaign that was easy (and funny) for players to participate it.

Basically the two contestants have to carry two heavy buckets of water around, while running in between two wooden pegs. At every such peg, they must consume a random drink from a table. As the contestants get more intoxicated, it becomes harder for them to maintain their balance while carrying the two heavy buckets around. Inevitably someone falls flat on their face, and gets soaking wet. The first to pass out or fall over, loses.

The random drinks vary from disgusting soapy water, to light alcoholic beverages, to heavy mixed drinks. Every alcoholic drink raises the constitution save by 1, or by 2 if its a mixed drink, starting at 10.

There's also plenty of hilarious role playing opportunities regarding the aftermath of either winning or losing the game.

Trollball.
Two teams of trolls. The ball is a goblin. Either team that gets a living goblin (only one in play at a time) across the goal line of the other team gets three points if the goblin is held, one if thrown or kicked. Either team can attack the goblin or the person holding the goblin at either time.

First team to ten points or the one with the highest points when they run out of goblins wins.

Last time I did something like this, it was a one-shot adventure set in Draj in Dark Sun (think Aztec city with a despotic sorcerer-king) and the PCs were slaves playing a fully-violent version of soccer with a severed head as a ball.



The rules were simple enough, but there are 4e and may need some adapting:
[sblock]
The Cabeza
When you take a move action while in possession of the cabeza, you can choose to move the cabeza a number of squares equal to your speed.

To shoot, simply move the cabeza into the goal. Each square of movement must bring the cabeza closer to the goal and cannot pass through an occupied square. After a successful goal, the next creature to start its turn or move adjacent to a spiked totem on their own side of the court is in possession of the cabeza.

If you trespass upon the realm of your rival moon without a cabeza in your possession, you lose a healing surge. Unless you're the goaltender, you cannot touch the cabeza with your arms or hands.

A creature is a Forward if it is in the enemy's side of the court. A creature is Defense if it is in their own court. The exception is the Goaltender which is a dedicated position chosen at the start of play.

Team with the highest score at the end of the second half wins. In the event of a tie, both teams are sacrificed to Ral and Guthay!

Forward
When you have the cabeza in the enemy's side of the court, if you hit an enemy with an attack, you can slide 1 square. The cabeza slides with you.

Defense
When you hit an adjacent enemy who has the cabeza with an attack, you can take possession of the cabeza.

Goaltender
Gain an aura 2. When an enemy tries to move the cabeza into a square of the goal covered by your aura, describe how you defend the goal and make a skill check (DC 21) as a free action. If you succeed, you take possession of the cabeza and must immediately move it up to your speed away from you.[/sblock]

You can have a pig's bladder kind of game with Athletics checks for specific plays and adjust the DC for harder maneuvers. Endurance checks after a few rounds to keep things up without having penalties to the Athletics checks. Sounds sort of like Olympic Gymnastics or Diving where the Dc is determined beforehand with what move the PC is planning. Villagers could get advantage on some things since they know how to play better than the PCs and know all the rules beforehand.