Go to http://www.answers.com/topic/indoor-playground-kid-s-world?cat=biz-fin

It would be a kids' playground. There will be more than one kid on the playground, so there are kids. Then to make that plural, you would have to ad only an apostrophe and not apostrophe then an "s". Where as if there were only one kid on the playground then it would be a kid's playground, because there would only be one object there.

Hope this helped.

You should check out the safety before purchasing indoor playground equipment. You can read more at www.alibaba.com/importers/indoor-playground-importer.html

The cast of Protection - 2000 includes: Arlene Ami as Julie Robyn Badger as Sex Trade Worker Giacomo Baessato as Jimmy Romeo Benjamin Villanueva as Kid in Playground Karlyna Cecchin as Kid in Playground Kelvyn Cecchin as Kid in Playground Camyar Chai as McKay Jennifer Copping as Amy Thomas de Schutter as Lyle Robyn Driscoll as John Catherine Falkner as Voice of Tanya Jillian Fargey as Betty Brittany Grant as Kid in Playground Kelsey Henderson as Kid in Playground Jami Henderson as Kid in Playground Liam Henderson as Kid in Playground Alexa Henderson as Kid in Playground Sarah Hooker as Kid in Playground Christopher Horinek as Kid in Playground Aytan Jaghory as Kid in Playground Hiro Kanagawa as Don Marieah Lander as Kid in Playground Nicole LaPlaca as Cindy Bryce MacDonald as Kid in Playground Brae McFarlane as Kid in Playground Lori Pappajohn as Sex Trade Worker Erik Paulsson as Bobby Mark Purkis as Surrey Man Heather Redmond as Ashley Ron Selmour as Sam Nancy Sivak as Jane Bruce Spangler as Arnold Skyler Trudeau as Kid in Playground Evangeline Villanueva as Kid in Playground Harrison Wagner as Kid in Playground Krista Walla as Kid in Playground

Though there isn't any standard or static dimensions for indoor playground. For your guidance I think 40ft x 100ft would be big enough for carrying indoor playground equipments.

I am also adding a relevant link where you can get more information about it.