“…Of the 22 empirical publications, the majority (17) were surveys of gamers, including some measure of loot box behaviour, with 13 reporting associations between some combination of loot boxes, problem gambling and/or problem video gaming. A total of 6 provided open access data for both self-report monthly loot box spend and PGSI scores (Drummond, Sauer, Ferguson, et al, 2020;Zendle, 2019b;Zendle et al, , 2020Zendle & Cairns, 2018, 2019, with a subset of three papers also containing data on self-report earnings (Drummond, Sauer, Ferguson, et al, 2020;Zendle & Cairns, 2018, 2019.…”