Taking the Challenge: An Exploratory Study on What Motivates Jammers to Participate in Game Jams. - Leandro de Almeida Melo; Cleidson de Souza; Marcelo Gattermann Perin; Fernando Figueira Filho; Any Caroliny Duarte Batista de Almeida; Fabio da Silva Jr. (ICGJ, 2021)