Gaming circle and market in Thailand have shown promising trends in terms of both business profits and acceptance from both governmental and private sectors in recent years. However, most games played by the Thais have been “imported” and only some games have been localized into Thai via game localization process. Game localization has its own uniqueness. The translators/localizers of games are required to take both linguistic and cultural elements, as well as other technical elements into consideration during the localization process of contents from source language into another languages. Game localizers/translators also have to localize the contents of the game to be suitable for the target societal and cultural contexts. Therefore, the game localizers/translators, as one type of translation agents, play an important role in the “selection” of localizing methods of games from source language into target language. Nonetheless, the issue of game localization has not been of much interest of scholars in Translation Studies and other related disciplines in Thailand. The objectives of this research are, thus, to explore an overview of the game localization circle, the role of game localizers and other game localizing agents and the role of the networks of game localizing agents. The project also delves into the game localization process with textual analyses of localized games and the role and impact of the localized games imposing on the Thai players. This research will construct the fundamental knowledge and the comprehensive foundation on the Thai game circle and industry through the lens of game localization, which will be beneficial to the field of Translation Studies and other related disciplines. Ultimately, the body of knowledge from this research can be developed into a guideline for policy recommendation on game localization.