"リバーシde懸賞 -公式パズルde懸賞シリーズ" is a game app developed by Ohte Inc. It offers a twist on the classic Reversi game by combining it with the excitement of winning prizes. Players can enjoy various game modes, including "かちきれ！リバーシ," "とことん！リバーシ," and "ふたりで！リバーシ." The app provides daily updated prizes and features a two-player mode, hints, and a back function for a smooth gameplay experience. For those who enjoy Reversi, puzzles, board games, or seeking brain training apps, this free app is a great choice to have fun and potentially win prizes.

Players can participate in prize draws by accumulating points through clearing game challenges. The app operates its unique prize system where points earned correspond to the number of entries into the draws. Winners are selected randomly the day after the entry deadline, with prizes shipped within Japan. The app ensures transparency in the prize draw process and offers continuous improvements based on user feedback.