diff --git a/packages/client/src/components/bingo-card.tsx b/packages/client/src/components/bingo-card.tsx
index 2ab7197..47c83bc 100644
--- a/packages/client/src/components/bingo-card.tsx
+++ b/packages/client/src/components/bingo-card.tsx
@@ -27,7 +27,7 @@ export function BingoCard({ card, onTap }: BingoCardProps) {
 							key={square.tropeId}
 							type="button"
 							onClick={() => onTap(square.tropeId)}
-							className={`flex aspect-square items-center justify-center rounded-md border p-1 text-center text-xs leading-tight transition-colors ${
+							className={`flex aspect-square items-center justify-center rounded-md border p-1.5 text-center text-sm leading-snug transition-colors ${
 								square.tapped
 									? "border-primary bg-primary/20 font-medium text-primary"
 									: "border-muted hover:bg-muted/50"
diff --git a/packages/client/src/components/jury-host.tsx b/packages/client/src/components/jury-host.tsx
index 15f3b5a..4e78289 100644
--- a/packages/client/src/components/jury-host.tsx
+++ b/packages/client/src/components/jury-host.tsx
@@ -1,4 +1,3 @@
-import { useState } from "react"
 import type { Entry, JuryRound, JuryResult } from "@celebrate-esc/shared"
 import { Button } from "@/components/ui/button"
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
@@ -12,26 +11,8 @@ interface JuryHostProps {
 }
 
 export function JuryHost({ entries, currentRound, results, onOpenVote, onCloseVote }: JuryHostProps) {
-	const [selectedCountry, setSelectedCountry] = useState<string | null>(null)
 	const votedCountries = new Set(results.map((r) => r.countryCode))
 
-	if (currentRound) {
-		return (
-			<Card>
-				<CardHeader>
-					<CardTitle>
-						Voting: {currentRound.countryFlag} {currentRound.countryName}
-					</CardTitle>
-				</CardHeader>
-				<CardContent>
-					<Button onClick={onCloseVote} variant="destructive" className="w-full">
-						Close Voting
-					</Button>
-				</CardContent>
-			</Card>
-		)
-	}
-
 	return (
 		<Card>
 			<CardHeader>
@@ -54,37 +35,41 @@ export function JuryHost({ entries, currentRound, results, onOpenVote, onCloseVo
 				<div className="flex flex-col gap-1">
 					{entries.map((entry) => {
 						const voted = votedCountries.has(entry.country.code)
-						const isSelected = selectedCountry === entry.country.code
+						const isVoting = currentRound?.countryCode === entry.country.code
 						return (
-							<button
+							<div
 								key={entry.country.code}
-								type="button"
-								disabled={voted}
-								onClick={() => setSelectedCountry(isSelected ? null : entry.country.code)}
-								className={`rounded-md border px-3 py-2 text-left text-sm transition-colors ${
+								className={`flex items-center justify-between rounded-md border px-3 py-2 text-sm ${
 									voted
 										? "border-transparent bg-muted/50 text-muted-foreground line-through opacity-50"
-										: isSelected
+										: isVoting
 											? "border-primary bg-primary/5"
-											: "hover:bg-muted"
+											: ""
 								}`}
 							>
-								{entry.country.flag} {entry.artist} — {entry.song}
-							</button>
+								<span>{entry.country.flag} {entry.artist} — {entry.song}</span>
+								{!voted && !currentRound && (
+									<Button
+										size="sm"
+										variant="outline"
+										onClick={() => onOpenVote(entry.country.code)}
+									>
+										Open
+									</Button>
+								)}
+								{isVoting && (
+									<Button
+										size="sm"
+										variant="destructive"
+										onClick={onCloseVote}
+									>
+										Close
+									</Button>
+								)}
+							</div>
 						)
 					})}
 				</div>
-				{selectedCountry && (
-					<Button
-						onClick={() => {
-							onOpenVote(selectedCountry)
-							setSelectedCountry(null)
-						}}
-						className="w-full"
-					>
-						Open Voting
-					</Button>
-				)}
 			</CardContent>
 		</Card>
 	)
diff --git a/packages/client/src/components/leaderboard.tsx b/packages/client/src/components/leaderboard.tsx
index 859308c..995c7b6 100644
--- a/packages/client/src/components/leaderboard.tsx
+++ b/packages/client/src/components/leaderboard.tsx
@@ -13,7 +13,7 @@ export function Leaderboard({ entries }: LeaderboardProps) {
 			<CardHeader>
 				<CardTitle>Leaderboard</CardTitle>
 			</CardHeader>
-			<CardContent>
+			<CardContent className="flex flex-col gap-4">
 				<div className="flex flex-col gap-1">
 					{entries.map((entry, i) => (
 						<div key={entry.playerId} className="flex items-center justify-between border-b py-1.5 last:border-0">
@@ -31,6 +31,13 @@ export function Leaderboard({ entries }: LeaderboardProps) {
 						</div>
 					))}
 				</div>
+				<div className="rounded-md bg-muted/50 p-3 text-xs text-muted-foreground">
+					<p className="mb-1 font-medium">How scoring works</p>
+					<ul className="flex flex-col gap-0.5">
+						<li><strong>J</strong> = Jury points — rate each act 1-12, earn up to 5 pts per round for matching the group consensus</li>
+						<li><strong>B</strong> = Bingo points — 2 pts per tapped trope + 10 bonus for a full bingo line</li>
+					</ul>
+				</div>
 			</CardContent>
 		</Card>
 	)
diff --git a/packages/client/src/components/player-list.tsx b/packages/client/src/components/player-list.tsx
index 6ba4f0e..1202ad3 100644
--- a/packages/client/src/components/player-list.tsx
+++ b/packages/client/src/components/player-list.tsx
@@ -17,7 +17,7 @@ export function PlayerList({ players, mySessionId, predictionSubmitted }: Player
 						<span
 							className={`h-2 w-2 rounded-full ${player.connected ? "bg-green-500" : "bg-muted"}`}
 						/>
-						<span className={player.sessionId === mySessionId ? "font-bold" : ""}>
+						<span className={player.sessionId === mySessionId ? "font-bold underline" : ""}>
 							{player.displayName}
 						</span>
 						{player.isHost && (
@@ -25,9 +25,6 @@ export function PlayerList({ players, mySessionId, predictionSubmitted }: Player
 								Host
 							</Badge>
 						)}
-						{player.sessionId === mySessionId && (
-							<span className="text-xs text-muted-foreground">(you)</span>
-						)}
 						{predictionSubmitted?.[player.id] && (
 							<span className="text-green-600" title="Prediction submitted">✓</span>
 						)}
diff --git a/packages/client/src/routes/host.$roomCode.tsx b/packages/client/src/routes/host.$roomCode.tsx
index 5d0ae4b..ab507b8 100644
--- a/packages/client/src/routes/host.$roomCode.tsx
+++ b/packages/client/src/routes/host.$roomCode.tsx
@@ -24,6 +24,13 @@ const nextActLabels: Partial<Record<Act, string>> = {
 	scoring: "End Party",
 }
 
+const prevActLabels: Partial<Record<Act, string>> = {
+	"pre-show": "Back to Lobby",
+	"live-event": "Back to Pre-Show",
+	scoring: "Back to Live Event",
+	ended: "Back to Scoring",
+}
+
 function HostView() {
 	const { roomCode } = Route.useParams()
 	const { send } = useWebSocket(roomCode)
@@ -117,9 +124,20 @@ function HostView() {
 							</CardHeader>
 							<CardContent className="flex flex-col gap-3">
 								{room.currentAct !== "ended" && (
-									<Button onClick={() => send({ type: "advance_act" })} className="w-full">
-										{nextActLabels[room.currentAct] ?? "Next"}
-									</Button>
+									<div className="flex gap-2">
+										{room.currentAct !== "lobby" && (
+											<Button
+												variant="outline"
+												onClick={() => send({ type: "revert_act" })}
+												className="flex-1"
+											>
+												{prevActLabels[room.currentAct] ?? "Back"}
+											</Button>
+										)}
+										<Button onClick={() => send({ type: "advance_act" })} className="flex-1">
+											{nextActLabels[room.currentAct] ?? "Next"}
+										</Button>
+									</div>
 								)}
 								{room.currentAct !== "ended" && (
 									<Button
@@ -131,9 +149,17 @@ function HostView() {
 									</Button>
 								)}
 								{room.currentAct === "ended" && (
-									<p className="text-center text-muted-foreground">
-										The party has ended. Thanks for playing!
-									</p>
+									<div className="flex flex-col gap-2">
+										<p className="text-center text-muted-foreground">
+											The party has ended. Thanks for playing!
+										</p>
+										<Button
+											variant="outline"
+											onClick={() => send({ type: "revert_act" })}
+										>
+											{prevActLabels[room.currentAct] ?? "Back"}
+										</Button>
+									</div>
 								)}
 								{room.currentAct === "live-event" && gameState && (
 									<JuryHost
diff --git a/packages/server/src/rooms/room-manager.ts b/packages/server/src/rooms/room-manager.ts
index 0e18b08..0ab6eb4 100644
--- a/packages/server/src/rooms/room-manager.ts
+++ b/packages/server/src/rooms/room-manager.ts
@@ -87,6 +87,18 @@ export class RoomManager {
 		return { newAct: nextAct }
 	}
 
+	revertAct(code: string, sessionId: string): { newAct: Act } | { error: string } {
+		const room = this.rooms.get(code)
+		if (!room) return { error: "Room not found" }
+		if (room.hostSessionId !== sessionId) return { error: "Only the host can revert acts" }
+		if (room.currentAct === "lobby") return { error: "Already at the first act" }
+
+		const currentIndex = ACTS.indexOf(room.currentAct)
+		const prevAct = ACTS[currentIndex - 1]!
+		room.currentAct = prevAct
+		return { newAct: prevAct }
+	}
+
 	endRoom(code: string, sessionId: string): { success: true } | { error: string } {
 		const room = this.rooms.get(code)
 		if (!room) return { error: "Room not found" }
diff --git a/packages/server/src/ws/handler.ts b/packages/server/src/ws/handler.ts
index f7efc4e..aa8387f 100644
--- a/packages/server/src/ws/handler.ts
+++ b/packages/server/src/ws/handler.ts
@@ -227,7 +227,25 @@ export function registerWebSocketRoutes() {
 							break
 						}
 
-						case "end_room": {
+						case "revert_act": {
+							if (!sessionId) {
+								sendError(ws, "Not joined")
+								return
+							}
+							const result = roomManager.revertAct(roomCode, sessionId)
+							if ("error" in result) {
+								sendError(ws, result.error)
+								return
+							}
+							broadcast(roomCode, {
+								type: "act_changed",
+								newAct: result.newAct,
+							})
+							broadcastGameStateToAll(roomCode)
+							break
+						}
+
+					case "end_room": {
 							if (!sessionId) {
 								sendError(ws, "Not joined")
 								return
diff --git a/packages/shared/src/ws-messages.ts b/packages/shared/src/ws-messages.ts
index 7bc6c6c..a77faa8 100644
--- a/packages/shared/src/ws-messages.ts
+++ b/packages/shared/src/ws-messages.ts
@@ -19,6 +19,10 @@ export const advanceActMessage = z.object({
 	type: z.literal("advance_act"),
 })
 
+export const revertActMessage = z.object({
+	type: z.literal("revert_act"),
+})
+
 export const endRoomMessage = z.object({
 	type: z.literal("end_room"),
 })
@@ -54,6 +58,7 @@ export const clientMessage = z.discriminatedUnion("type", [
 	joinRoomMessage,
 	reconnectMessage,
 	advanceActMessage,
+	revertActMessage,
 	endRoomMessage,
 	submitPredictionMessage,
 	openJuryVoteMessage,