diff --git a/lib/data/dao/game_dao.dart b/lib/data/dao/game_dao.dart
index fc931ad..a5946f2 100644
--- a/lib/data/dao/game_dao.dart
+++ b/lib/data/dao/game_dao.dart
@@ -88,4 +88,12 @@ class GameDao extends DatabaseAccessor<AppDatabase> with _$GameDaoMixin {
     final result = await query.getSingleOrNull();
     return result != null;
   }
+
+  /// Deletes all games from the database.
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> deleteAllGames() async {
+    final query = delete(gameTable);
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
 }
diff --git a/lib/data/dao/group_dao.dart b/lib/data/dao/group_dao.dart
index 8eb3a1a..39f8c45 100644
--- a/lib/data/dao/group_dao.dart
+++ b/lib/data/dao/group_dao.dart
@@ -103,4 +103,12 @@ class GroupDao extends DatabaseAccessor<AppDatabase> with _$GroupDaoMixin {
     final result = await query.getSingleOrNull();
     return result != null;
   }
+
+  /// Deletes all groups from the database.
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> deleteAllGroups() async {
+    final query = delete(groupTable);
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
 }
diff --git a/lib/data/dao/player_dao.dart b/lib/data/dao/player_dao.dart
index 591634c..e0aa165 100644
--- a/lib/data/dao/player_dao.dart
+++ b/lib/data/dao/player_dao.dart
@@ -70,4 +70,12 @@ class PlayerDao extends DatabaseAccessor<AppDatabase> with _$PlayerDaoMixin {
             .getSingle();
     return count ?? 0;
   }
+
+  /// Deletes all players from the database.
+  /// Returns `true` if more than 0 rows were affected, otherwise `false`.
+  Future<bool> deleteAllPlayers() async {
+    final query = delete(playerTable);
+    final rowsAffected = await query.go();
+    return rowsAffected > 0;
+  }
 }