“…In addition, using competition and a leader board on the internet improves the effectiveness of gamified challenging activities as the pupils participated in challenges and were awarded by the teacher and the website with positive expressions. Per the findings of the current study; previous studies (Chenge, et al, 2009;Han & Chan, 2008;Ke, 2008;Yu & Liu, 2009;Dettmer, 2004;Hung, 2011;Guevara, 2014, Hasegawa et al 2015Klimova & Kacet, 2017;Ibrahim, 2017;Vasileiadou & Makrina, 2017;Alzaid, 2018) revealed that competition has a good impact on student's performance in the classroom, particularly in vocabulary retention, which confirmed the positive effects of online games on language acquisition, particularly vocabulary retention.…”