Latest News

The M‑Letter, Program Book, and PAAG are now available.

Come to WeeM! If you didn’t preregister, register on site.

Double your chance of winning the $50 Amazon Gift Card and other cash prizes by signing up to volunteer before Wednesday! Ask your friends to join you.

Order your exclusive WeeM 45 merchandise now!

Interested in sharing a room or ride? Let our matchmaker help you by signing up no later than today.

See All the Rates.

This site will be updated with the latest information as it becomes available.

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  • Join us for four days of RG fun where the cool smart people party — including everything you expect from WeeM!
  • Multiple tracks of programs to keep you intellectually stimulated
  • An RG on the grandest scale, with over 500 attendees
  • A wonderful and lavish Ten-Forward experience with plenty to eat and drink plus lots of room to socialize!
  • 24-hour gaming with one of the largest game collections in the Midwest! (Though you may want to let the Kling­on win.)
  • Thursday Explorations designed to lure you away from the starship hotel and enjoy some the area’s best activities and try new things
  • Lots of scheduled tournaments, including nightly Werewolf.
  • Pun-tastic costumes in our Friday night costume contest. Come see your fellow alien band members and Starfleet comrades!
  • Extend your pinkies during Saturday night’s Pretentious Drinking or enjoy strange samples at the Epicurean Experience.
  • Kids’ Track AND Babysitting!
  • And … an excellent hotel!
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Join us at WeeM! There’s no RG like this!

Stimulate both your mind and senses. Come to WeeM to have fun with over 500 fellow Mensans from all over the world and their guests. Play games, attend seminars, dance, talk, eat, drink, volunteer, and laugh. Check out the photos to see what happened in past years. Once you come to WeeM, like many past attendees, you’ll be under its magical spell, returning every year. WeeM is so special, you'll want to make the trip — some cross the galaxy just to be here!

Come to WeeM and, if you haven't preregistered, please register at the door. If you preregistered but your payment was not received by October 15th, no discounts for which you may have qualified will be honored and you must pay the at-the-door rate.

Join the Adventure

Come to HalloweeM and register at the door if you haven’t preregister. Included in your registration fee are meals, snacks, and libations.


Our Starship

The Westin Chicago North Shore Hotel in Wheeling has comfortable living quarters, a very accommodating, friendly staff, and plenty of space including Ten Forward where we provide meals, snacks, and libations, all included in your registration fee.



Multiple tracks (both A & B sides) to keep you intellectually stimulated and entertained are being offered and special annual events like our infamous Costume Contest and Pretentious Drinking. Check often to see what new programs have been added.


Games & Tournaments

24-hour gaming in a dedicated room.
Tournaments throughout the weekend.


Explore New Worlds

An Excursion is available on Thursday before HalloweeM officially starts.


Interested in Sharing a Room or Ride?

Let us know the details and our matchmaker will do the rest.


Bring the kids!

We are pleased to offer you and your kids a wide variety of activities throughout the long weekend. Babysitting will be offered for certain periods of time.


Join the Crew!

Volunteer and get a coveted pin. Earn raffle entries for cash prizes. Rescue someone in distress.


Kick Ferengi Butt

Vendor tables will be set up and WeeM merchandise is on sale now. And donate books for our Book Sale — funds are donated to a good cause.


If you take the Mensa Test on Sunday at 2 PM, you can take advantage of the 50% discount, but you must preregister.


  • Registration - Join the fun at WeeM. Register at the door if you haven’t preregistered. The deadline for online registration was October 15th.
  • Excursion - The sign-up deadline for the Excursions was Monday, October 18th.
  • Vendor space - The deadline to submit the contract was October 20th.
  • Lodging - The deadline set by the hotel for the WeeM rate was October 14th.
  • Volunteer Now! Get involved and become a star. We have a great WeeM every year due to the many of you who sign up to help out for a few hours or more. Double your chance of winning the $50 Amazon Gift Card and other cash prizes by signing up before Wednesday, October 27th.
  • Room and/or Ride Sharing - Let us help match you up with another attendee who is also interested in sharing a room or ride by submitting your information by Sunday, October 24th.
  • Speaker/Tournament Submissions - The deadline to submit your proposal for a program or tournament for WeeM was Wednesday, September 15th.

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