diff --git a/src/components.scad b/src/components.scad
index 4a8be42..16f2153 100644
--- a/src/components.scad
+++ b/src/components.scad
@@ -470,6 +470,12 @@ module sega_2p_plus_one() {
 	translate([0, -19-9-11-19-9-11, 0]) sega_2p_p1();
 }
 
+module sega_2p_eleven() {
+	sega_2p_plus_one();
+	translate([sega_2p_column_5_offset, 0, 0]) sega_2p_p1();
+	translate([sega_2p_column_5_offset, -19-9-11, 0]) sega_2p_p1();
+}
+
 module shiokenstar() {
 	translate([-172, 32, 0]) dir_arc_24mm_directionals();
 	sega_2p();
diff --git a/src/misc/decorative-plate-sega-2p-eleven-plate.scad b/src/misc/decorative-plate-sega-2p-eleven-plate.scad
new file mode 100644
index 0000000..ab5bbb5
--- /dev/null
+++ b/src/misc/decorative-plate-sega-2p-eleven-plate.scad
@@ -0,0 +1,23 @@
+/* Decorative plate for directional buttons.
+ *
+ * SPDX-FileCopyrightText: © 2024 Brian S. Stephan <bss@incorporeal.org>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+include <parameters.scad>
+decorative_radius_scale = 1.5;
+jumbo_decorative_radius_scale = 0;
+include <components.scad>
+
+module sega_2p_eleven_plate_decorative_plate() {
+	difference() {
+		// get a 2mm slice of the bigger button cylinders
+		translate([panel_x/2, 0, -25]) hull() sega_2p_eleven();
+		translate([0, 0, -100]) cube([500, 500, 198], center=true);
+		translate([0, 0, 100]) cube([500, 500, 198], center=true);
+		// cut out the normal holes
+		translate([panel_x/2, 0, -1]) sega_2p_eleven();
+	}
+}
+
+sega_2p_eleven_plate_decorative_plate();
diff --git a/src/panels/inset/sega-2p-eleven-panel-with-mount.scad b/src/panels/inset/sega-2p-eleven-panel-with-mount.scad
new file mode 100644
index 0000000..18f8bee
--- /dev/null
+++ b/src/panels/inset/sega-2p-eleven-panel-with-mount.scad
@@ -0,0 +1,16 @@
+/* 11-button Sega 2P panel with PCB mount
+ *
+ * SPDX-FileCopyrightText: © 2023 Brian S. Stephan <bss@incorporeal.org>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+include <parameters.scad>
+include <components.scad>
+use <sega-2p-eleven-panel.scad>
+
+module sega_2p_eleven_panel_with_mount() {
+	sega_2p_eleven_panel();
+	translate([30, -50, -(panel_z/2) - 3]) pcb_mount();
+}
+
+sega_2p_eleven_panel_with_mount();
diff --git a/src/panels/inset/sega-2p-eleven-panel.scad b/src/panels/inset/sega-2p-eleven-panel.scad
new file mode 100644
index 0000000..7b9dcc0
--- /dev/null
+++ b/src/panels/inset/sega-2p-eleven-panel.scad
@@ -0,0 +1,17 @@
+/* A panel with the Sega 2P button layout plus three extra buttons for whatever purpose.
+ *
+ * SPDX-FileCopyrightText: © 2024 Brian S. Stephan <bss@incorporeal.org>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+include <parameters.scad>
+include <components.scad>
+
+module sega_2p_eleven_panel() {
+	difference() {
+		panel();
+		sega_2p_eleven();
+	}
+}
+
+sega_2p_eleven_panel();
diff --git a/src/parameters.scad b/src/parameters.scad
index d8a4c2a..fa4a61b 100644
--- a/src/parameters.scad
+++ b/src/parameters.scad
@@ -114,6 +114,7 @@ slash_height = frame_z-panel_z*3;
 sega_2p_column_2_offset = 30.5;
 sega_2p_column_3_offset = sega_2p_column_2_offset + 36;
 sega_2p_column_4_offset = sega_2p_column_3_offset + 36;
+sega_2p_column_5_offset = sega_2p_column_4_offset + 36;
 
 // this offset is from the left edge of the panel
 sega_2p_column_1_left_panel_edge_offset = 28.06;