diff --git a/app/game-engine/src/scenario/scenarioSeeder.ts b/app/game-engine/src/scenario/scenarioSeeder.ts
index 87d4f02..5c81868 100644
--- a/app/game-engine/src/scenario/scenarioSeeder.ts
+++ b/app/game-engine/src/scenario/scenarioSeeder.ts
@@ -34,6 +34,7 @@ export interface ScenarioInstallOptions {
     joinMode?: 'full' | 'onlyRandom';
     autorunUser?: ScenarioAutorunOptions | null;
     preopenAt?: Date | null;
+    season?: number;
 }
 
 export interface ScenarioSeedOptions {
@@ -254,6 +255,10 @@ export const seedScenarioToDatabase = async (options: ScenarioSeedOptions): Prom
         lastTurnTime: formatDateTime(now),
     };
 
+    if (typeof install?.season === 'number' && Number.isFinite(install.season)) {
+        worldMeta.season = Math.floor(install.season);
+    }
+
     const integrationSeed = process.env[INTEGRATION_WORLD_SEED_ENV];
     if (typeof integrationSeed === 'string' && integrationSeed.trim().length > 0) {
         worldMeta.hiddenSeed = integrationSeed.trim();
diff --git a/app/gateway-api/src/adminRouter.ts b/app/gateway-api/src/adminRouter.ts
index a86fb2d..86b9bd1 100644
--- a/app/gateway-api/src/adminRouter.ts
+++ b/app/gateway-api/src/adminRouter.ts
@@ -4,7 +4,7 @@ import path from 'node:path';
 import { TRPCError } from '@trpc/server';
 import { z } from 'zod';
 
-import { resolvePostgresConfigFromEnv } from '@sammo-ts/infra';
+import { createGamePostgresConnector, resolvePostgresConfigFromEnv } from '@sammo-ts/infra';
 
 import { procedure, router } from './trpc.js';
 import { listScenarioPreviews, resolveGitCommitSha } from './scenario/scenarioCatalog.js';
@@ -329,6 +329,20 @@ const readMetaObject = (value: unknown): Record<string, unknown> => {
     return value as Record<string, unknown>;
 };
 
+const readMetaNumber = (meta: Record<string, unknown>, key: string): number | null => {
+    const raw = meta[key];
+    if (typeof raw === 'number' && Number.isFinite(raw)) {
+        return Math.floor(raw);
+    }
+    if (typeof raw === 'string') {
+        const parsed = Number(raw);
+        if (Number.isFinite(parsed)) {
+            return Math.floor(parsed);
+        }
+    }
+    return null;
+};
+
 const applyMetaPatch = (
     meta: Record<string, unknown>,
     patch: Record<string, unknown | null | undefined>
@@ -850,6 +864,22 @@ export const adminRouter = router({
                     schema: updatedProfile.profile,
                 }).url;
                 const resourcesRoot = path.resolve(process.cwd(), 'resources');
+                const profileMeta = readMetaObject(updatedProfile.meta);
+                const nextSeasonIdx = readMetaNumber(profileMeta, 'nextSeasonIdx');
+                let baseSeason: number | null = null;
+                const connector = createGamePostgresConnector({ url: databaseUrl });
+                try {
+                    await connector.connect();
+                    const row = await connector.prisma.worldState.findFirst({
+                        select: { meta: true },
+                    });
+                    if (row) {
+                        baseSeason = readMetaNumber(readMetaObject(row.meta), 'season');
+                    }
+                } finally {
+                    await connector.disconnect();
+                }
+                const season = nextSeasonIdx ?? baseSeason ?? 1;
 
                 await seedProfileDatabase({
                     databaseUrl,
@@ -866,6 +896,7 @@ export const adminRouter = router({
                         showImgLevel: input.install.showImgLevel,
                         tournamentTrig: input.install.tournamentTrig,
                         joinMode: input.install.joinMode,
+                        season,
                         autorunUser: input.install.autorunUser
                             ? {
                                   limitMinutes: input.install.autorunUser.limitMinutes,
diff --git a/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts b/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts
index 1e763ad..ecc5d86 100644
--- a/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts
+++ b/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts
@@ -113,6 +113,20 @@ interface GatewayAdminActionResult {
 
 const normalizeMeta = (value: unknown): Record<string, unknown> => (isRecord(value) ? value : {});
 
+const readMetaNumber = (meta: Record<string, unknown>, key: string): number | null => {
+    const raw = meta[key];
+    if (typeof raw === 'number' && Number.isFinite(raw)) {
+        return Math.floor(raw);
+    }
+    if (typeof raw === 'string') {
+        const parsed = Number(raw);
+        if (Number.isFinite(parsed)) {
+            return Math.floor(parsed);
+        }
+    }
+    return null;
+};
+
 const normalizeStatus = (value: unknown): GatewayAdminActionStatus | null => {
     if (typeof value === 'string') {
         return value as GatewayAdminActionStatus;
@@ -615,6 +629,10 @@ export class GatewayOrchestrator implements GatewayOrchestratorHandle {
             if (!seedInfo.scenarioId) {
                 return { status: 'FAILED', detail: 'scenarioId is missing' };
             }
+            const profileMeta = normalizeMeta(profile.meta);
+            const nextSeasonIdx = readMetaNumber(profileMeta, 'nextSeasonIdx');
+            const baseSeason = readMetaNumber(normalizeMeta(seedInfo.meta), 'season');
+            const season = nextSeasonIdx ?? baseSeason ?? 1;
             const seedTime =
                 openAt ??
                 (action.scheduledAt && action.action === 'RESET_SCHEDULED' ? new Date(action.scheduledAt) : this.now());
@@ -650,7 +668,10 @@ export class GatewayOrchestrator implements GatewayOrchestratorHandle {
                 scenarioId: seedInfo.scenarioId,
                 tickSeconds: seedInfo.tickSeconds,
                 now: seedTime,
-                installOptions: installOptions ?? undefined,
+                installOptions: {
+                    ...(installOptions ?? {}),
+                    season,
+                },
                 scenarioOptions: { scenarioRoot: path.join(resourceRoot, 'scenario') },
                 mapOptions: { mapRoot: path.join(resourceRoot, 'map') },
                 unitSetOptions: { unitSetRoot: path.join(resourceRoot, 'unitset') },
@@ -685,18 +706,19 @@ export class GatewayOrchestrator implements GatewayOrchestratorHandle {
     private async resolveResetSeedInfo(
         profile: GatewayProfileRecord,
         overrides?: { scenarioId?: number | null; tickSeconds?: number }
-    ): Promise<{ databaseUrl: string; scenarioId: number | null; tickSeconds?: number }> {
+    ): Promise<{ databaseUrl: string; scenarioId: number | null; tickSeconds?: number; meta: Record<string, unknown> } > {
         const databaseUrl = resolvePostgresConfigFromEnv({
             env: this.processConfig.baseEnv ?? process.env,
             schema: profile.profile,
         }).url;
         let scenarioId = overrides?.scenarioId ?? parseScenarioId(profile.scenario);
         let tickSeconds: number | undefined = overrides?.tickSeconds;
+        let meta: Record<string, unknown> = {};
         const connector = createGamePostgresConnector({ url: databaseUrl });
         await connector.connect();
         try {
             const row = await connector.prisma.worldState.findFirst({
-                select: { scenarioCode: true, tickSeconds: true },
+                select: { scenarioCode: true, tickSeconds: true, meta: true },
             });
             if (row) {
                 if (scenarioId === null) {
@@ -708,11 +730,12 @@ export class GatewayOrchestrator implements GatewayOrchestratorHandle {
                 if (tickSeconds === undefined && typeof row.tickSeconds === 'number' && Number.isFinite(row.tickSeconds)) {
                     tickSeconds = row.tickSeconds;
                 }
+                meta = normalizeMeta(row.meta);
             }
         } finally {
             await connector.disconnect();
         }
-        return { databaseUrl, scenarioId, tickSeconds };
+        return { databaseUrl, scenarioId, tickSeconds, meta };
     }
 
     private async runBuildCommands(