リバーシde懸賞 - オセロで遊んで懸賞に応募 is a board game by Ohte, Inc. with 50,000+ downloads (about 77K estimated). +65 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Cumulative total of 17 million downloads! The latest installment of the popular free-to-play sweepstakes app "Puzzle de Sweepstakes" series! You can get gorgeous prizes just by playing Othello with simple rules!
[What is Reversi de sweepstakes]
・Sweepstakes x Othello app that you can play for free!
・You can win…”