Aug 16 (Reuters) - Roblox Corp"s (RBLX.N) quarterly bookings missed market expectations on Monday, as easing restrictions slowed the pandemic-fueled surge in spending for its games including "Jailbreak" and "MeepCity", sending its shares down 3%. The company, one of the world"s most popular gaming sites for children, is a pandemic winner that had benefited from stay-at-home orders. But with school reopening following the rollout of vaccines in the United States, online games lagged as kids are now encouraged to return to outdoor activities. The company"s bookings rose 35% to $665.5 million for the second quarter ended June 30. Analysts had expected $683.3 million, according to IBES data from Refinitiv. Net loss attributable to common stockholders widened to $140.13 million, or 25 cents per share, for the quarter, compared to $71.5 million, or 40 cents per share, a year earlier.