In this game the participants will play a special version of Monopoly :
The players will be restrained in special chairs.
Instead of buying streets, the players will buy body parts. When an opposing player lands on a bought field, they will get tickled on the corresponding body part.
Instead of building houses & hotels, the players will build a gradually more powerful tickling device. The chairs the players are in will have more functions active, the more advanced the field construction is.
The jail case, does of course contain a special tickle treatment.
The subject is trapped in a clothing store naked and can leave anytime she wants.
However all the clothes in the store have been trapped with tickling devices, safe one for each type of clothing.
The subject must therefore chose between leaving the shop naked, leave with some clothing that tickles her, or stay inside until she manages to find every non-tickling piece of cloth
Furthermore, once a piece of clothing has been put on, it cannot be removed for the next 2 minutes.
The subjects will need to cooperate to solve a Rubik's cube (3 by 3 will be used at first, but the cube's size may be modified if needed). At the start of the experiment, the positions of the cube will be randomized. Each participant will be attributed a color and a side of the cube. The goal of the game is to put every color on it's correct side. The participants will act on turn, once their turn, they'll be allowed to make one rotation to the cube. Communication with the other players will not be allowed. The players will be tickled based on how many tiles of their color are missing from their appointed side. For example on a 3*3 cube there will be 9 tiles to each side, so the red player would have to bring all red tiles to her side, the tickling would be very intense if all 9 are missing but it would progressively lessen as more red tiles are present.
Of course, due to constant rotation, the amount of tiles present will constantly change, and even if a player solves one side and get a brief respite, the game will not end as long as the whole puzzle has not been solved.
Expectations :
The tricky part here is that players need to cooperate without communicating. Even if the puzzle is partially solved, someone might mess up and set them several steps back.
The subjects are playing a game of tickle poker. How they players are tickled would be Inversely proportional on the results , so the player with the highest cards gets tickled based on the last player's result & inversely, the loser gets tickled on what the winner has.
One participant will be given a number of coins and instructed to hide them on their body. Once done she will be restrained and her opponent will have 30 seconds to examine her body in detail (which maaayy tickle ) while blindfolded to find a maximum of coins. After time has run out, the looter may keep all the coins she found on the tied up one, while the remaining coins will remain in possession of the tied up girl.
The girls will then switch position and repeat the process with a new set of coins.
At the end the girls add the earnings of both rounds to see how much coin they got. (The number of rounds or participants could be increased but 2 is a minimum for both).
For the next phase, the girls will be restrained in a tickle machine, equipped with various tools and programmed to handle various body parts. By default everything will be set on, but the girls may spend their earnings to disable some devices permanently. For example a girl might have earned 30 coins during the game. She could spend 15 points to not have her feet tickled or 10 to protect her sides. But she could also spend points to disable a particular tool like a brush for 10 points or a mechanical finger for 5 points...
If after the second round a girl still has some capital, it can carry over to a new round of the game. The amount of rounds is up to the organizer.
For your Exp. 25, I remember reading a fiction story on this site many years ago which the Monopoly board was drawn on the tickle victim's belly, which was ticklish enough on its own. Then the game of Tickle Monopoly began.