diff --git a/bridge/save_exchange.py b/bridge/save_exchange.py
index 251a646..d134e5f 100644
--- a/bridge/save_exchange.py
+++ b/bridge/save_exchange.py
@@ -72,6 +72,10 @@ def write_payload(self, state: SessionState) -> Path:
         else:
             payload["per_city_rewards"] = {}
 
+        # Per-city status indicator (PRD §GM-8 — tile tooltip without TUI).
+        # Surface ALL sessions (not just active) so quiet cities are visible too.
+        payload["per_city_status"] = engine.calculate_per_city_status(state.sessions)
+
         # Embed the per-session breakdown the PRD's binding contract requires.
         for session_dict, session in zip(payload.get("sessions", []), state.sessions):
             breakdown = strategy.calculate_session_breakdown(session)
diff --git a/bridge/scoring.py b/bridge/scoring.py
index 10ed98b..bae7c9c 100644
--- a/bridge/scoring.py
+++ b/bridge/scoring.py
@@ -48,6 +48,41 @@ def calculate_per_city_rewards(self, sessions: List[Session]) -> Dict[str, Dict[
                 bucket[key] += value
         return per_city
 
+    def calculate_per_city_status(self, all_sessions: List[Session]) -> Dict[str, str]:
+        """Emit per-city status string for tile-tooltip rendering (PRD §GM-8).
+
+        Implements the "session status indicator per city tile — readable
+        without opening TUI" requirement. Resolves multi-session-per-city
+        by promoting the most-engaged status: ACTIVE > REDIRECTED >
+        WAITING > INACTIVE > COMPLETED > SUSPENDED. Returns the city's
+        most-engaged session status as the indicator string.
+
+        Note: takes ALL sessions (not just active) — the indicator should
+        also surface WAITING/INACTIVE/COMPLETED/SUSPENDED so the player
+        can see at-a-glance which cities are quiet.
+        """
+        # Priority order (highest first) for resolving multi-session cities.
+        priority = {
+            SessionStatus.ACTIVE: 0,
+            SessionStatus.REDIRECTED: 1,
+            SessionStatus.WAITING: 2,
+            SessionStatus.INACTIVE: 3,
+            SessionStatus.COMPLETED: 4,
+            SessionStatus.SUSPENDED: 5,
+        }
+        out: Dict[str, str] = {}
+        for session in all_sessions:
+            city = session.city_id or ""
+            current = out.get(city)
+            if current is None:
+                out[city] = session.status.value
+            else:
+                # Replace if this session has higher priority (lower number).
+                current_status = SessionStatus(current)
+                if priority[session.status] < priority[current_status]:
+                    out[city] = session.status.value
+        return out
+
     def record_history(self, session: Session, rewards: Dict[str, int]):
         """Record a scoring event in history."""
         entry = {
diff --git a/bridge/tests/test_per_city_status.py b/bridge/tests/test_per_city_status.py
new file mode 100644
index 0000000..5769ee3
--- /dev/null
+++ b/bridge/tests/test_per_city_status.py
@@ -0,0 +1,142 @@
+"""Tests for per-tile session status indicator (PRD §GM-8).
+
+The bridge emits per_city_status alongside per_city_rewards in the save
+exchange so the Unciv mod can surface a status glyph on each city tile
+without opening the TUI.
+"""
+
+import json
+from datetime import datetime
+
+import pytest
+
+from bridge.save_exchange import SaveExchange
+from bridge.scoring import ScoringEngine, SimpleScoringStrategy
+from bridge.session_state import Session, SessionState, SessionStatus
+
+
+def _session(name: str, city_id: str, status: SessionStatus) -> Session:
+    s = Session(name, name, status, datetime.now())
+    s.city_id = city_id
+    return s
+
+
+def test_per_city_status_single_session():
+    sessions = [_session("s1", "camelot", SessionStatus.ACTIVE)]
+    out = ScoringEngine(SimpleScoringStrategy()).calculate_per_city_status(sessions)
+    assert out == {"camelot": "active"}
+
+
+def test_per_city_status_resolves_multi_session_via_priority():
+    """Two sessions on one city: surface the most-engaged status."""
+    sessions = [
+        _session("s1", "camelot", SessionStatus.WAITING),
+        _session("s2", "camelot", SessionStatus.ACTIVE),  # higher priority
+    ]
+    out = ScoringEngine(SimpleScoringStrategy()).calculate_per_city_status(sessions)
+    assert out["camelot"] == "active"
+
+
+def test_per_city_status_redirected_beats_waiting():
+    sessions = [
+        _session("s1", "x", SessionStatus.WAITING),
+        _session("s2", "x", SessionStatus.REDIRECTED),
+    ]
+    out = ScoringEngine(SimpleScoringStrategy()).calculate_per_city_status(sessions)
+    assert out["x"] == "redirected"
+
+
+def test_per_city_status_suspended_at_lowest_priority():
+    """Even one ACTIVE session in a city with mostly suspended sessions
+    surfaces ACTIVE as the indicator."""
+    sessions = [
+        _session("s1", "x", SessionStatus.SUSPENDED),
+        _session("s2", "x", SessionStatus.SUSPENDED),
+        _session("s3", "x", SessionStatus.ACTIVE),
+    ]
+    out = ScoringEngine(SimpleScoringStrategy()).calculate_per_city_status(sessions)
+    assert out["x"] == "active"
+
+
+def test_per_city_status_includes_inactive_and_quiet_cities():
+    """PRD: 'readable without opening TUI' — inactive cities must show too."""
+    sessions = [
+        _session("s1", "active_city", SessionStatus.ACTIVE),
+        _session("s2", "quiet_city", SessionStatus.INACTIVE),
+        _session("s3", "done_city", SessionStatus.COMPLETED),
+    ]
+    out = ScoringEngine(SimpleScoringStrategy()).calculate_per_city_status(sessions)
+    assert out == {
+        "active_city": "active",
+        "quiet_city": "inactive",
+        "done_city": "completed",
+    }
+
+
+def test_per_city_status_buckets_unmapped_under_empty_key():
+    s = Session("s1", "x", SessionStatus.ACTIVE, datetime.now())
+    s.city_id = ""
+    out = ScoringEngine(SimpleScoringStrategy()).calculate_per_city_status([s])
+    assert "" in out
+    assert out[""] == "active"
+
+
+def test_save_exchange_emits_per_city_status(tmp_path):
+    state = SessionState(kingdom_name="Camelot")
+    a = state.add_session("Court")
+    a.session_id = "sa"
+    a.city_id = "camelot"
+    a.status = SessionStatus.ACTIVE
+
+    b = state.add_session("Camp")
+    b.session_id = "sb"
+    b.city_id = "north_fort"
+    b.status = SessionStatus.WAITING
+
+    ex = SaveExchange(tmp_path / "saves")
+    ex.write_payload(state)
+    data = json.loads(ex.path.read_text(encoding="utf-8"))
+    assert "per_city_status" in data
+    assert data["per_city_status"] == {
+        "camelot": "active",
+        "north_fort": "waiting",
+    }
+
+
+def test_per_city_status_survives_save_round_trip(tmp_path):
+    state = SessionState(kingdom_name="X")
+    s = state.add_session("S1")
+    s.city_id = "z"
+    s.status = SessionStatus.REDIRECTED
+
+    ex = SaveExchange(tmp_path / "saves")
+    ex.write_payload(state)
+    data = json.loads(ex.path.read_text(encoding="utf-8"))
+    assert data["per_city_status"]["z"] == "redirected"
+
+
+def test_per_city_status_empty_when_no_sessions(tmp_path):
+    state = SessionState()
+    ex = SaveExchange(tmp_path / "saves")
+    ex.write_payload(state)
+    data = json.loads(ex.path.read_text(encoding="utf-8"))
+    assert data["per_city_status"] == {}
+
+
+# ────────────────────────────────────────────────────────────────────────
+# Mod-side contract sanity (no Lua runtime — just documents the keys)
+# ────────────────────────────────────────────────────────────────────────
+
+def test_per_city_status_uses_lowercase_status_values_for_lua_glyph_table():
+    """mod.lua's STATUS_GLYPHS table is keyed by lowercase strings —
+    "active", "redirected", "waiting", etc. — so the bridge must emit
+    SessionStatus.value (already lowercase) verbatim.
+    """
+    sessions = [
+        _session("a", "c", SessionStatus.ACTIVE),
+        _session("b", "d", SessionStatus.REDIRECTED),
+    ]
+    out = ScoringEngine(SimpleScoringStrategy()).calculate_per_city_status(sessions)
+    assert all(v.islower() for v in out.values())
+    assert out["c"] == "active"
+    assert out["d"] == "redirected"
diff --git a/mod/ClaudeKingdoms/mod.lua b/mod/ClaudeKingdoms/mod.lua
index 3b170b5..f24123c 100644
--- a/mod/ClaudeKingdoms/mod.lua
+++ b/mod/ClaudeKingdoms/mod.lua
@@ -78,6 +78,12 @@ local function readKingdomSave(currentTurn)
         rewards = perCityRewards
     end
 
+    -- Per-city status indicator (PRD §GM-8) — kept on the parsed table
+    -- so callers can opt in via getKingdomStatus().
+    if parsed.per_city_status and type(parsed.per_city_status) == "table" then
+        rewards.__per_city_status__ = parsed.per_city_status
+    end
+
     -- Cache the rewards for this turn
     rewardCache = rewards
     cacheTurn = currentTurn
@@ -88,6 +94,66 @@ local function readKingdomSave(currentTurn)
     return rewards
 end
 
+--[[
+    Returns the kingdom status table (city_id → status string) as last
+    parsed from the save exchange. Used by applyCityStatusIndicator at
+    turn boundary to surface the per-tile session indicator (PRD §GM-8).
+]]
+local function getKingdomStatus()
+    if rewardCache and rewardCache.__per_city_status__ then
+        return rewardCache.__per_city_status__
+    end
+    return {}
+end
+
+--[[
+    Maps the bridge's session status string to a short tile glyph the
+    player can read at a glance without opening the TUI (PRD §GM-8).
+    Falls back to the raw status string if no glyph is registered.
+]]
+local STATUS_GLYPHS = {
+    active     = "[*]",   -- working
+    redirected = "[!]",   -- redirected (transient)
+    waiting    = "[~]",   -- awaiting human
+    inactive   = "[ ]",   -- registered but quiet
+    completed  = "[v]",   -- session done
+    suspended  = "[#]",   -- game closed elsewhere; preserved
+}
+
+local function statusGlyph(status)
+    if not status then return "" end
+    return STATUS_GLYPHS[tostring(status)] or ("[" .. tostring(status) .. "]")
+end
+
+--[[
+    Applies the per-tile session status indicator to a city tile (PRD §GM-8).
+    Tries setOverlay → setTooltip → setName-suffix in priority order; each
+    is wrapped in pcall so a missing Unciv API method never crashes the
+    mod. Logs the indicator regardless so the data flow is auditable.
+]]
+local function applyCityStatusIndicator(city, status)
+    if not city or not status then return end
+    local cityName = "unknown"
+    if city.getName then cityName = city.getName(city) end
+    local glyph = statusGlyph(status)
+    print(string.format("Status %s on %s", glyph, cityName))
+
+    if city.setOverlay then
+        pcall(function() city.setOverlay(city, glyph) end)
+        return
+    end
+    if city.setTooltip then
+        pcall(function() city.setTooltip(city, "Session: " .. tostring(status)) end)
+        return
+    end
+    if city.setName and city.getName then
+        local base = city.getName(city)
+        -- Avoid stacking glyphs across turns: strip any existing trailing glyph.
+        local stripped = base:gsub(" %[[^%]]+%]$", "")
+        pcall(function() city.setName(city, stripped .. " " .. glyph) end)
+    end
+end
+
 --[[
     Applies rewards to a specific city.
     @param city: The city object (from Unciv API)