Every project has to create their announcement thread in Bitcointalk from zero and build their reputation from zero. Zero in this forum only because they can have longer history of operation. I believe Duelbits has a long history before they joined the forum. Maybe they joined the forum after they decided to run signature campaign here and Hhampuz told them to create ANN thread here.
It's almost two years they have been on the forum and signature campaign has completed 93 weeks successfully paid to the participants but they might be operational before that also as search shows it was founded in 2020 February.So the campaign was launched after that and yes they have made their reputation on the forum from scratch and now they are well recognised casino on the forum.