Use space with purpose
A full-page layout can give a brand story, game or product illustration room to breathe. It also asks for more attention. Keep the offer readable and the close control easy to find. Full-page presentation is a starting choice, not a universal conversion guarantee.
Think through the smallest screen
Test a narrow viewport and the on-screen keyboard. Keep the email field, consent and button reachable by scrolling. Avoid text baked into images and don’t make the visitor complete a game just to dismiss the form.
Match the moment
A click-triggered early-access signup can be a natural full-page interaction. A returning shopper looking for a specific product may benefit from a smaller flyout instead. Choose the layout and trigger together, then compare actual accepted signups and visitor behavior.