The phrase "massive playground" is correct and usable in written English.
You can use it to describe a big, outdoor play area when you want to emphasize its size. For example: "The children were in awe of the massive playground they visited on their school trip."
It was a massive playground for me as a kid.
Inside are a massive playground, Charles Garnier's carousel, puppet shows, pony rides and sailboats for hire.
InStyle and Warner Brothers teamed up and had a live band, HBO occupied the pool area, Glamour and the Weinstein Co. built a tent of their own, and up on the roof, NBC Universal/Focus Features had a massive playground.
"We see aggregation as the internet 25 years ago," he says, "a massive playground which we can use to build technology that has an impact on people's lives.
The first movement is a massive playground of wild invention; the second, a somber meditation in disturbing zombie-like suspended animation; the third, a zest-fest.
But if you realize that the internet is a massive playground and YOU get to create products, and use channels like Apple and Amazon to sell them through, you can truly have a successful online business.
Towns become massive playgrounds.
Beyond offering almost limitless choices, these massive playgrounds are often startlingly innovative.
Behind the playground are massive glacial rocks that bolder children like to climb on and slide down.
The urge to quote David Bowie lyrics is almost irresistible – is irresistible – because at the King's School in Ottery St Mary, there's a massive antenna in the playground, a temporary space station in the school hall and a small crowd of children and parents waiting patiently.
As part of Dark Park, Dark Mofo's massive outdoor "public art playground" which features immersive and interactive works from all over the world, UK-based light artist Chris Levine is set to light up Hobart with a sprawling technicolor laser show called iy_project 136.1 Hz.
