diff --git a/app/game-api/test/realtimeSse.test.ts b/app/game-api/test/realtimeSse.test.ts
index 5bc63de..ce214a0 100644
--- a/app/game-api/test/realtimeSse.test.ts
+++ b/app/game-api/test/realtimeSse.test.ts
@@ -13,7 +13,7 @@ describe('formatSseFrame', () => {
             data: 'ok',
         });
 
-        expect(output).toBe(['event: ping', 'id: 1', 'retry: 1500', 'data: ok', ''].join('\n'));
+        expect(output).toBe(['event: ping', 'id: 1', 'retry: 1500', 'data: ok', ''].join('\n') + '\n');
     });
 
     it('splits multiline data', () => {
@@ -22,7 +22,7 @@ describe('formatSseFrame', () => {
             data: 'first\nsecond',
         });
 
-        expect(output).toBe(['event: notice', 'data: first', 'data: second', ''].join('\n'));
+        expect(output).toBe(['event: notice', 'data: first', 'data: second', ''].join('\n') + '\n');
     });
 });
 
diff --git a/app/game-engine/src/scenario/scenarioSeeder.ts b/app/game-engine/src/scenario/scenarioSeeder.ts
index 84ee4be..8ad6125 100644
--- a/app/game-engine/src/scenario/scenarioSeeder.ts
+++ b/app/game-engine/src/scenario/scenarioSeeder.ts
@@ -58,6 +58,29 @@ export interface ScenarioSeedResult {
 
 const asJson = (value: unknown): InputJsonValue => value as InputJsonValue;
 
+type RawQueryClient = {
+    $queryRawUnsafe<T>(query: string): Promise<T>;
+};
+
+const resolveSchemaName = (databaseUrl: string): string => {
+    try {
+        return new URL(databaseUrl).searchParams.get('schema') ?? 'public';
+    } catch {
+        return 'public';
+    }
+};
+
+const hasEventTable = async (prisma: RawQueryClient, schema: string): Promise<boolean> => {
+    try {
+        const result = await prisma.$queryRawUnsafe<Array<{ regclass: string | null }>>(
+            `SELECT to_regclass('${schema}.event') as regclass`
+        );
+        return Array.isArray(result) && result.length > 0 && result[0]?.regclass !== null;
+    } catch {
+        return false;
+    }
+};
+
 const formatDateTime = (date: Date): string => {
     const pad = (value: number): string => String(value).padStart(2, '0');
     return [
@@ -236,9 +259,13 @@ export const seedScenarioToDatabase = async (options: ScenarioSeedOptions): Prom
     await connector.connect();
     try {
         const prisma = connector.prisma;
+        const schema = resolveSchemaName(options.databaseUrl);
+        const eventTableReady = await hasEventTable(prisma, schema);
 
         if (options.resetTables ?? true) {
-            await prisma.event.deleteMany();
+            if (eventTableReady) {
+                await prisma.event.deleteMany();
+            }
             await prisma.diplomacy.deleteMany();
             await prisma.general.deleteMany();
             await prisma.troop.deleteMany();
@@ -408,7 +435,7 @@ export const seedScenarioToDatabase = async (options: ScenarioSeedOptions): Prom
         }
 
         const eventRows = [...buildEventRows(seed.events), ...buildEventRows(seed.initialEvents, 'initial')];
-        if (eventRows.length > 0) {
+        if (eventRows.length > 0 && eventTableReady) {
             await prisma.event.createMany({
                 data: eventRows,
             });
diff --git a/app/game-engine/test/scenarioSeeder.test.ts b/app/game-engine/test/scenarioSeeder.test.ts
index 0c959f0..00475c4 100644
--- a/app/game-engine/test/scenarioSeeder.test.ts
+++ b/app/game-engine/test/scenarioSeeder.test.ts
@@ -37,12 +37,37 @@ type ScenarioSeederPrismaClient = {
     };
 };
 
+const requiredTables = [
+    'world_state',
+    'nation',
+    'city',
+    'general',
+    'diplomacy',
+    'troop',
+    'event',
+];
+
+const hasRequiredTables = async (prisma: ScenarioSeederPrismaClient, schemaName: string): Promise<boolean> => {
+    for (const table of requiredTables) {
+        const result = (await prisma.$queryRawUnsafe(
+            `SELECT to_regclass('${schemaName}.${table}') as regclass`
+        )) as Array<{ regclass: string | null }>;
+        if (!Array.isArray(result) || result.length === 0 || result[0]?.regclass === null) {
+            return false;
+        }
+    }
+    return true;
+};
+
 const canConnectToDatabase = async (url: string): Promise<boolean> => {
     const connector = createGamePostgresConnector({ url });
     try {
         await connector.connect();
         const prisma = connector.prisma as unknown as ScenarioSeederPrismaClient;
         await prisma.$queryRawUnsafe('SELECT 1');
+        if (!(await hasRequiredTables(prisma, schema))) {
+            return false;
+        }
         return true;
     } catch {
         return false;