Playing video games engages children and youth and offers a potential for learning in general and situated language learning in particular. The aim of this paper is to explore the situated conditions and affordances for facilitating in-game interaction, as well as to discuss the language learning potential and educational implications of these conditions. In this paper, this is discussed through two datasets: (a) a pre-study, a survey among students in grades 4-7 (n = 65), as well as (b) playtests with child volunteers (n = 6), conducted in pairs in a laboratory setting. The results are discussed in relation to interactional practices, what game genres and mechanics are relevant to tandem language learning and the implications that in-game competence might have on such learning.