People communicating through machine translators cannot tell what the purpose of their communication is or what other people are thinking because of the poor quality of translation services. If they are able to share their understanding within a "common ground" like a communicative or behavioral protocol, they can overcome their difficulties in communication, and we can improve information systems to help them improve mutual understanding. We designed a multilingual participatory gaming simulation, and conducted multilingual gaming experiments with Japanese and Korean participants. We extracted the protocol for conversation with mistranslations from the game logs and designed an agent to support conversation. Then, Japanese and Chinese played it and we observed and analyzed the behaviors of agents and the interaction between players and agents. Consequently, we obtained two main sets of results: (1) an agent function that notified players of the time that had elapsed since the conversation had broken down effectively speeded up their negotiations and achieved more active communications. (2) Tagging by participants was difficult and ineffective in leading to specific protocols and conversations when mistranslations occurred.

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Langrid Gaming, which provides multilingual communication for gaming simulations using translation services provided on the Language Grid, is a useful educational tool and can contribute to the resolution of international social conflicts. This tool has been enhanced on the basis of the experience and know-how obtained from the participants' comments and suggestions.However, the object and the model object of the gaming tool are usually defined as Java or PHP objects, which makes it difficult for non-programmers to develop a new game. In this study, we propose a framework to implement various types of Langrid Gaming easily. In particular, we designed a new domain specific language (DSL) called 'Karina' to describe targeted games, and implemented a translator to convert Karina script into CGI programs. This script development environment makes game building easy and simplifies the development procedures, regardless of whether the gaming developer is a programmer or not.