diff --git a/src-ui/js/list.js b/src-ui/js/list.js
index ff20c042a..793eff91f 100644
--- a/src-ui/js/list.js
+++ b/src-ui/js/list.js
@@ -233,6 +233,7 @@
 			"kakuro",
 			"sudoku",
 			"fillomino",
+			"symmarea",
 			"ripple",
 			"akari",
 			"shakashaka"
diff --git a/src-ui/js/ui/KeyPopup.js b/src-ui/js/ui/KeyPopup.js
index b955ec442..c20d5904e 100644
--- a/src-ui/js/ui/KeyPopup.js
+++ b/src-ui/js/ui/KeyPopup.js
@@ -73,6 +73,7 @@ ui.keypopup = {
 		tateyoko: [10, 0],
 		factors: [10, 10],
 		fillomino: [10, 10],
+		symmarea: [10, 10],
 		renban: [10, 10],
 		ripple: [10, 10],
 		cojun: [10, 10],
diff --git a/src-ui/list.html b/src-ui/list.html
index ed2940444..971f1019d 100644
--- a/src-ui/list.html
+++ b/src-ui/list.html
@@ -228,6 +228,7 @@ <h2 id="title"><span lang="ja">パズルの種類のリスト</span><span lang="
    <ul>
     <li data-pid="sudoku"></li>
     <li data-pid="fillomino"></li>
+    <li data-pid="symmarea"></li>
     <li data-pid="ripple"></li>
     <li data-pid="factors"></li>
     <li data-pid="makaro"></li>
diff --git a/src/puzzle/Config.js b/src/puzzle/Config.js
index 94dd04f0a..4122585e2 100644
--- a/src/puzzle/Config.js
+++ b/src/puzzle/Config.js
@@ -357,7 +357,7 @@
 					exec = pid === "mashu";
 					break;
 				case "forceallcell":
-					exec = pid === "fillomino";
+					exec = pid === "fillomino" || pid === "symmarea";
 					break;
 				case "dontpassallcell":
 					exec = pid === "arukone";
diff --git a/src/pzpr/variety.js b/src/pzpr/variety.js
index 73db9c0e2..6f4dbf0fa 100755
--- a/src/pzpr/variety.js
+++ b/src/pzpr/variety.js
@@ -286,6 +286,7 @@
 			sudoku: [0, 1, "数独", "Sudoku"],
 			sukoro: [1, 0, "数コロ", "Sukoro", "sukoro"],
 			sukororoom: [0, 0, "数コロ部屋", "Sukoro-room", "sukoro"],
+			symmarea: [0, 0, "シンメトリーエリア", "Symmetry Area", "fillomino"],
 			tapa: [0, 0, "Tapa", "Tapa"],
 			tasquare: [0, 0, "たすくえあ", "Tasquare"],
 			tatamibari: [1, 0, "タタミバリ", "Tatamibari"],
diff --git a/src/variety/fillomino.js b/src/variety/fillomino.js
index 6768930df..4f874181b 100644
--- a/src/variety/fillomino.js
+++ b/src/variety/fillomino.js
@@ -7,7 +7,7 @@
 	} else {
 		pzpr.classmgr.makeCustom(pidlist, classbase);
 	}
-})(["fillomino"], {
+})(["fillomino", "symmarea"], {
 	//---------------------------------------------------------
 	// マウス入力系
 	MouseEvent: {
@@ -336,6 +336,7 @@
 			"checkSideAreaNumberSize",
 			"checkLargeArea",
 			"checkNumKinds",
+			"checkRoomSymm@symmarea",
 			"checkNoNumArea",
 			"checkNoNumCell_fillomino+"
 		],
@@ -370,6 +371,23 @@
 				return area.numkind >= 1;
 			}, "bkNoNum");
 		},
+		checkRoomSymm: function() {
+			var board = this.board;
+			this.checkAllErrorRoom(function(area) {
+				var clist = area.clist,
+					d = clist.getRectSize();
+				var sx = d.x1 + d.x2,
+					sy = d.y1 + d.y2;
+				for (var i = 0; i < clist.length; i++) {
+					var cell = clist[i],
+						cell2 = board.getc(sx - cell.bx, sy - cell.by);
+					if (cell2.nblk !== area) {
+						return false;
+					}
+				}
+				return true;
+			}, "bkNotSymmRoom");
+		},
 		checkAllErrorRoom: function(evalfunc, code) {
 			var rooms = this.board.numblkgraph.components;
 			for (var id = 0; id < rooms.length; id++) {
@@ -405,11 +423,15 @@
 		],
 		bkMixedNum: [
 			"1つのブロックに2種類以上の数字が入っています。",
-			"A room has two or more kinds of numbers."
+			"A block has two or more kinds of numbers."
 		],
 		bsSameNum: [
 			"同じ数字のブロックが辺を共有しています。",
 			"Adjacent blocks have the same number."
+		],
+		bkNotSymmRoom: [
+			"部屋の形が点対称ではありません。",
+			"The block is not point symmetric."
 		]
 	}
 });
diff --git a/test/script/symmarea.js b/test/script/symmarea.js
new file mode 100644
index 000000000..d8cbf51d6
--- /dev/null
+++ b/test/script/symmarea.js
@@ -0,0 +1,64 @@
+/* symmarea.js */
+
+ui.debug.addDebugData("symmarea", {
+	url: "6/6/g1i1g6i82p53i5g1i4g",
+	failcheck: [
+		[
+			"bkSizeLt",
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 1 8 . /6 . 8 8 8 . /. 6 6 8 1 8 /2 1 6 2 5 . /. 3 3 2 . 5 /. 4 4 4 . 1 /1 1 1 1 1 /0 1 0 0 0 /1 0 1 1 1 /1 1 1 1 0 /0 0 1 1 0 /1 0 0 0 1 /0 1 0 1 0 1 /1 0 1 0 1 0 /0 1 0 1 1 1 /1 1 1 0 0 0 /1 1 1 1 1 1 /"
+		],
+		[
+			"bsSameNum",
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 1 8 . /6 . 8 8 8 . /. 6 6 8 5 8 /2 1 6 5 5 . /. 3 3 1 . 1 /. 1 4 4 . 4 /1 1 1 1 1 /0 1 0 0 0 /1 0 1 1 1 /1 1 1 0 0 /0 0 1 1 1 /1 1 0 0 0 /0 1 0 1 0 0 /1 0 1 0 1 0 /0 1 0 1 0 1 /1 1 1 1 0 1 /1 1 1 1 1 1 /"
+		],
+		[
+			"bkSizeGt",
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 1 8 . /6 . 8 8 8 . /. 6 6 8 5 8 /2 1 6 2 5 . /. 3 3 2 . 5 /. 4 4 4 . 5 /1 1 1 1 1 /0 1 0 0 0 /1 0 1 1 1 /1 1 1 1 0 /0 0 1 1 0 /1 0 0 0 1 /0 1 0 1 0 1 /1 0 1 0 1 0 /0 1 0 1 0 1 /1 1 1 0 0 0 /1 1 1 1 1 0 /"
+		],
+		[
+			"bkMixedNum",
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 1 8 . /6 . 8 8 8 . /. 6 6 8 5 8 /2 1 6 5 5 . /. 3 . 1 . 2 /. . 4 4 . 2 /1 1 1 1 1 /0 1 0 0 0 /1 0 1 1 1 /1 1 1 0 0 /0 0 1 1 1 /1 0 0 0 1 /0 1 0 1 0 0 /1 0 1 0 1 0 /0 1 0 1 0 1 /1 1 1 1 0 1 /1 0 0 1 1 0 /"
+		],
+		[
+			"bkNoNum",
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 1 8 . /6 . 8 8 8 . /. 6 6 8 5 8 /2 1 6 5 5 . /. 3 3 1 . . /. 4 4 4 . . /1 1 1 1 1 /0 1 0 0 0 /1 0 1 1 1 /1 1 1 0 0 /0 0 1 1 1 /1 0 0 0 1 /0 1 0 1 0 0 /1 0 1 0 1 0 /0 1 0 1 0 1 /1 1 1 1 0 1 /1 1 1 1 1 0 /"
+		],
+		[
+			"ceNoNum",
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 1 8 . /6 . . . . . /. 6 6 8 5 8 /2 1 6 5 5 . /. 3 3 1 . 2 /. 4 4 4 . 2 /1 1 1 1 1 /0 1 0 0 0 /1 0 1 1 1 /1 1 1 0 0 /0 0 1 1 1 /1 0 0 0 1 /0 1 0 1 0 1 /1 0 1 0 1 0 /0 1 0 1 0 1 /1 1 1 1 0 1 /1 1 1 1 1 0 /"
+		],
+		[
+			"bkNotSymmRoom",
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 8 8 . /6 . 1 8 8 . /. 6 6 8 5 8 /2 1 6 5 5 . /. 3 3 1 . 2 /. 4 4 4 . 2 /1 1 0 0 1 /0 1 1 0 0 /1 0 1 1 1 /1 1 1 0 0 /0 0 1 1 1 /1 0 0 0 1 /0 1 1 0 0 1 /1 0 1 0 1 0 /0 1 0 1 0 1 /1 1 1 1 0 1 /1 1 1 1 1 0 /"
+		],
+		[
+			null,
+			"pzprv3/symmarea/6/6/. 1 . . . 1 /. 6 . . . 8 /2 . . . . . /. . . . . 5 /3 . . . 5 . /1 . . . 4 . /6 . 8 1 8 . /6 . 8 8 8 . /. 6 6 8 5 8 /2 1 6 5 5 . /. 3 3 1 . 2 /. 4 4 4 . 2 /1 1 1 1 1 /0 1 0 0 0 /1 0 1 1 1 /1 1 1 0 0 /0 0 1 1 1 /1 0 0 0 1 /0 1 0 1 0 1 /1 0 1 0 1 0 /0 1 0 1 0 1 /1 1 1 1 0 1 /1 1 1 1 1 0 /"
+		]
+	],
+	inputs: [
+		/* 問題入力はbosanowaと同じなので省略 */
+		/* 回答入力テスト */
+		{ input: ["newboard,4,2", "editmode", "cursor,1,1", "key,3", "playmode"] },
+		{
+			input: ["mouse,right, 1,1, 5,1"],
+			result:
+				"pzprv3/symmarea/2/4/3 . . . /. . . . /. . . . /. . . . /-1 -1 0 /0 0 0 /0 0 0 0 /"
+		},
+		{
+			input: ["mouse,left, 1,1, 5,1"],
+			result:
+				"pzprv3/symmarea/2/4/3 . . . /. . . . /. 3 3 . /. . . . /-1 -1 0 /0 0 0 /0 0 0 0 /"
+		},
+		{
+			input: ["mouse,left, 7,1, 1,1"],
+			result:
+				"pzprv3/symmarea/2/4/3 . . . /. . . . /. . . . /. . . . /-1 -1 0 /0 0 0 /0 0 0 0 /"
+		},
+		{
+			input: ["mouse,left, 2,0, 2,2, 0,2"],
+			result:
+				"pzprv3/symmarea/2/4/3 . . . /. . . . /. . . . /. . . . /2 -1 0 /0 0 0 /1 0 0 0 /"
+		}
+	]
+});