Video game maker Roblox was down for tens of thousands of users in the United States on Tuesday, according to outage tracking website Downdetector.com.

Roblox cut its annual bookings forecast on Thursday, fanning concerns about a slump in the videogame industry and sending its shares down 23% to mark their worst day in more than two years.

Roblox (RBLX) stock is down Thursday after the online gaming platform came up short on bookings and users for its fourth quarter and issued full-year guidance that also missed expectations.