Royalties per Platform?

The royalty is on 5% of gross revenue, regardless of how that revenue comes in. It doesn’t compound; it’s always just 5%.

Epic earns a 5% royalty per project, if that one project is distributed on 3 different platforms, is the due royalty still 5% or does each additional platform incur another 5%, so 15% for 3 platforms?

Great thank you!