Gridspark stores your progress and preferences in your browser or the portal's save service. The Polar Games leaderboard receives an anonymous player ID, game scores and replay data to validate results. If you submit a nickname, it and your score can appear publicly. Use an alias, not personal details. Network requests also expose your IP address to the receiving service. For privacy questions or removal requests, contact willian@polargames.com.br. The hosting portal's own privacy policy also applies.