# Sonder > The Sonder player guide. How heroes think, change and remember. - [Welcome to Sonder](https://docs.playsonder.app/index.md): A dark fantasy town and dungeon game for mobile, where every hero has a mind of their own. - [Personality](https://docs.playsonder.app/heroes/personality.md): Why two heroes of the same race and class make different choices in the same fight. - [The nine traits](https://docs.playsonder.app/heroes/traits.md): Every trait, both of its sides, and what it changes in a fight and in town. - [How personality changes](https://docs.playsonder.app/heroes/how-personality-changes.md): Heroes are changed by what they live through, and by nothing else. - [Grudges](https://docs.playsonder.app/heroes/grudges.md): A hero who sees an ally die remembers who did it. - [A hero's past](https://docs.playsonder.app/heroes/a-heros-past.md): Every hero reaches your town with a life already behind them. - [Buildings](https://docs.playsonder.app/town/buildings.md): Eleven buildings on a walled island. - [Trades](https://docs.playsonder.app/town/trades.md): The peasants who keep your town running. - [Dungeons](https://docs.playsonder.app/adventure/dungeons.md): Farm runs and live dungeons. - [Loot](https://docs.playsonder.app/adventure/loot.md): Gold, chests and plans. - [The Tower](https://docs.playsonder.app/adventure/the-tower.md): Twelve floors, three bosses. - [Leaderboard](https://docs.playsonder.app/adventure/leaderboard.md): One global ranking. - [Coming later](https://docs.playsonder.app/roadmap/coming-later.md): Trading between players is on the roadmap. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.