A thirty-second dwell time showed us exactly what we wanted. Users were engaging with the mini-game and trying it out and flicking away happily. We were not creating Tomb Raider here; we just wanted people to have fun while hopefully picking up a voucher. On top of the dwell time, we also saw a massive 90 per cent engagement and an average of 60 secs engagement time per user. Voucher download targets were smashed by over 110%.