Roblox, which is among the world's most popular gaming sites for children and offers a host of games across mobile devices and gaming consoles, saw its stock jump nearly 9% to a record high of $81.69 a share on the New York Stock Exchange. It was last up 7%.

The San Mateo, California, company's shares have now climbed 80% since its Wall Street debut on March 10. Roblox's $44 billion market capitalization dwarfs Hasbro's $14 billion value, while its annual sales are about a fifth of the century-old company's.

Hasbro said its Nerf blasters, which fire projectiles made of plastic foam, would be available in U.S. stores in the fall, each with a code entitling the customer to a "virtual blaster" for their online Roblox avatar.

Hasbro, which also said it created a Roblox version of its Monopoly game, saw its stock increase by 1.2% to $98.23 a share on the Nasdaq.

Usage and spending on Roblox has surged as kids stuck at home in the COVID-19 pandemic spent more time on the platform, fueling an 85% year-on-year jump in daily active users in 2020 and a surge in monthly in-app sales.

(Reporting by Noel Randewich; editing by Jonathan Oatis)

By Noel Randewich