Roblox’s second-biggest expense, behind developer fees, is infrastructure, privacy and safety. Those costs jumped 69 percent last year to $264.2 million.

Roblox, the online gaming platform, is going public on Wednesday. During the pandemic lockdown it's become a virtual playground, and the company has seen a surge in users, with millions now active.

A week after gaming platform Roblox announced its new milestone of 100 million monthly users — topping Minecraft — the company said at its fifth annual developer conference that its developer ...