A landing page asks for attention with nothing offered back — it is a request. A game gives something first — a short, replayable challenge — and only asks for an email after the attendee has already engaged. That ordering (value first, ask second) is the same principle behind why a game-based form outperforms a bare one; see event lead capture without badge scanners for the mechanics.
A game also creates something a static page cannot: visible motion. Someone playing on their phone next to your booth, or a leaderboard updating on a screen, is a signal to everyone nearby that something is happening — a link click on someone's phone is invisible to the person standing next to them. That gap matters because attendee appetite for games already outpaces what most exhibitors offer: CEIR's Attendee Floor Engagement research found 67% of attendees enjoy booth games, against only 7% of exhibitors who run one (CEIR research summary, SocialPoint) — a QR code that opens a game rather than a page is a rare, differentiated experience for most attendees.