Join J Tall (organizer of the BatKid Flashmob, Macklemob , and the Whitney Houston flashmob) for a rollicking dance rendition of Pharrell’s “Happy” in Yerba Buena Gardens at 7:15 pm on Thursday, April 24, 2014. Pharrell’s “Happy” Flashmob Thursday, April 24, 2014 | 7:15p Yerba Buena Gardens, SF FREE, but an RSVP is requested. Watch the instructional video more...

Yes, officially announced for 2014! Watch dozens of contestants at Bring Your Own Big Wheel 2014 (BYOBW) risk humiliation and serious injury racing their big wheels (those giant plastic tricycles from when we were kids – no rubber wheels allowed) down the crazy curvy Vermont & 20th streets – the actual more...

Thanks to the SF Weekly for the tipoff on the world’s premiere mustachioed dodgeball tourney taking place the Cinco de April weekend in San Francisco. Although the dodgeball tournament run by The World Dodgeball Society costs $180+ per team, most events (including watching the tournament) are free and open to the more...

International TableTop Day is a celebration for all the fans of tabletop gaming taking place on April 5, 2014. It’s a single day where the whole world is brought together in a common purpose of spending time together and having fun. Participating stores will offer free stuff like games, special edition more...

The colorful, ancient spring festival of Holi will once again be celebrated at Bishop Ranch in San Ramon, so get ready to get messy and have a lot of fun at this free gathering. 2014 Holi Celebration Friday, March 14, 2014 | 5-7 pm 2680 Bishop Drive, San Ramon FREE There will be live music, more...

Delight at watching other people freeze their tail ends off by taking a plunge in the bay for a good cause in Aquatic Park; it’s time for the Polar Plunge to benefit the Special Olympics of Northern California. Unlike the Escape From Alcatraz triathlon, these nearly 1,000 brave souls won’t be more...

Alienware is traveling around the US to show off it’s next generation gaming system with an epic Call of Duty: Ghosts battle and EDM dance party. Alienware “The Landing Tour” San Francisco Thursday, February 20, 2014 – 7:00 pm Folsom Street Foundry | 1425 Folsom St, San Francisco, CA >> FREE with RSVP Stopping in more...

Feathers will fly at this fun, flash-mob type event which takes place on Valentine’s Day, just as the Ferry Building clock tower strikes 6 pm. It’s Pillow Fight. Nearly 1,000 San Franciscans descend on Justin Herman Plaza with feather-stuffed pillows to run Braveheart-like at full speed at one another to lovingly more...

Jericho is an urban spy game with Nerf guns played sneaky in public settings all over SF like malls and parks, where everyone assumes the role of a spy like a giant secret game of Capture the Flag. Each team of “agents” will carry out missions where they will need to more...

It’s winter, so it must be time for snow in San Francisco, right? Kids can sled down a big snow hill as Mayor Ed Lee hosts the 4th Annual Free Holiday Snow Park in front of city hall with tons of snow on Saturday & Sunday, December 14 & 15, 2013. From more...

Improv Everywhere’s MP3 Experiment returns to San Francisco for the first time in two years for a participatory public event at The Esplanade at Yerba Buena Gardens at 1 pm on Tuesday, November 19, 2013. Download an mp3 file to your phone and then head out to Yerba Buena Gardesn and blend in with more...

Come Out & Play 2013 is a free annual festival of public street games bringing city-sized fun to San Francisco on November 9-10, 2013. Think urban spy games, giant capture the flag games, as well as brand new creations and iterations like Capture the Tag, Mime Boxing, Batonk, Monster Stomp and tons more. Games more...

Journey to the End of the Night is a free street game / scavenger hunt of epic proportions with nearly 2,000 people participating, all by foot or by Muni. It is a race/chase through city streets at night starting at 6 pm on Saturday, November 9, 2013. Journey to the End of more...

An annual, worldwide event that inspires city dwellers everywhere to transform metered parking spots into temporary parks for the public good, Rebar’s PARK(ing) Day is coming back to the city on Friday, September 20, 2013. These city-wide pop-up mini-parks can be used as performance spaces, reading lounges or just resting places by passerbys, more...

Scallywags and sailors alike unite every year on September 19, 2013, to don their seafaring finest and to lend their conversation some swagger in honor of International “Talk Like a Pirate Day.”  Although there are no “official” events planned, check out an international map on the Pirate Day website for any more...