“…Level/ Progress bar/ Levels of difficulty, metaphors and semiotics (Bucchiarone et al, 2023); (Tsopra et al, 2020); (Petrina and Gutica, 2021) Progression (Bucchiarone et al, 2023) Point/Reward systems/scores/Achievement (Bucchiarone et al, 2023); (Westera, 2019); (Tsopra et al, 2020); (Karakasis and Xinogalos, 2020); (Tsiotras and Xinogalos, 2021); (Jamshidifarsani et al, 2021) Leader board (Tsopra et al, 2020) Scaffolding (instruction in text format) (Karakasis and Xinogalos, 2020) repeatability (a player masters a task by repeating a set of actions) (Petrina and Gutica, 2021) Gameplay (Tahir and Wang, 2020) Artificial intelligence (AI) (including personalisation, difficulty balancing, evaluation, player analytics, competence modelling, social gamification, technical considerations and affective computing)/ Technical (Westera et al, 2020); (Tahir and Wang, 2020) Dilemma/Challenge provided/Increasing complexity/ Game play (Tang et al, 2019); (Silva et al, 2019); (Tsopra et al, 2020); (Harker-Schuch et al, 2020); (Lui and Au,…”