Massively Multiplayer Online Role-Playing Games (MMORPGs) are role-playing games that, through the Internet, can integrate thousands of players interacting at the same time in at least one virtual world. This way, these games can provide, besides fun, a greater familiarity with the second language and opportunity to improve linguistic proficiency in a real context. Hence, what is proposed in this study is extended knowledge about the learning of a second language mediated by MMORPGs. Based on a scientific study, we seek to answer the following research questions: (a) what distinguishes the learning profile of gamers and non-gamers; (b) can MMORPGs, through a hybrid and systematic approach, assist the development of second language proficiency, and (c) what do think-aloud protocols show about the learning mediated by the MMORPG Allods Online.