diff --git a/keyboard/planck/keymap_brett.c b/keyboard/planck/keymap_brett.c
index 16a12837c..378e78149 100644
--- a/keyboard/planck/keymap_brett.c
+++ b/keyboard/planck/keymap_brett.c
@@ -5,7 +5,7 @@ const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   ESC,  Q,    W,    E,    R,    T,    Y,    U,    I,    O,    P,    BSPC,
   LCTL, A,    S,    D,    F,    G,    H,    J,    K,    L,    SCLN, ENT,
   LSFT, Z,    X,    C,    V,    B,    N,    M,    COMM, DOT,  SLSH, RSFT,
-  LGUI, TAB,  LCTL, LALT, FN2,     SPC,     FN1,  LEFT, DOWN, UP,   RGHT),
+  LGUI, TAB,  RSFT, LALT, FN2,     SPC,     FN1,  LEFT, DOWN, UP,   RGHT),
 [1] = KEYMAP( /* RAISE */
   GRV,  1,    2,    3,    4,    5,    6,    7,    8,    9,    0,    DEL,
   TRNS, F1,   F2,   F3,   F4,   F5,   F6,   4,    5,    6,    TRNS, TRNS,
@@ -13,7 +13,7 @@ const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   MPRV, MNXT, TRNS, MUTE, TRNS,    TRNS,    FN1,  TRNS, TRNS, TRNS, PGDN),
 [2] = KEYMAP( /* LOWER */
   FN22, FN10, FN11, FN12, FN13, FN14, FN15, FN16, FN17, FN18, FN19, MINS,
-  TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, EQL,
+  TRNS, TRNS, TRNS, PAUSE, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, EQL,
   TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS, TRNS,
   MPLY, MSTP, VOLU, VOLD, FN2,     TRNS,    TRNS, TRNS, TRNS, TRNS, TRNS),
 };
diff --git a/keyboard/planck/keymap_jack.c b/keyboard/planck/keymap_jack.c
index 3724bca49..c74812121 100644
--- a/keyboard/planck/keymap_jack.c
+++ b/keyboard/planck/keymap_jack.c
@@ -24,7 +24,7 @@ const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 };
 const uint16_t PROGMEM fn_actions[] = {
     [1] = ACTION_LAYER_MOMENTARY(2),  // to Fn overlay
-    [2] = ACTION_LAYER_MOMENTARY(3),  // to Fn overlay 
+    [2] = ACTION_LAYER_MOMENTARY(3),  // to Fn overlay
 
     [3] = ACTION_DEFAULT_LAYER_SET(0),  
     [4] = ACTION_DEFAULT_LAYER_SET(1),
diff --git a/keyboard/planck/keymap_simon.c b/keyboard/planck/keymap_simon.c
new file mode 100644
index 000000000..37951364b
--- /dev/null
+++ b/keyboard/planck/keymap_simon.c
@@ -0,0 +1,44 @@
+#include "keymap_common.h"
+
+const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = KEYMAP( /* Jack */
+  ESC,  Q,    W,    E,    R,    T,    Y,    U,    I,    O,    P,    BSPC,
+  TAB,  A,    S,    D,    F,    G,    H,    J,    K,    L,    DOT,  ENT,
+  LSFT, Z,    X,    C,    V,    B,    N,    M,    COMM, DOT,  SCLN, DEL,
+  LCTL, ENT,  LALT, CAPS, FN2,    SPC,      FN1,  LEFT, DOWN, UP,   RGHT),
+[1] = KEYMAP( /* Jack RAISE */
+  TRNS, F1,   F2,   F3,   F4,   NO,   FN11, FN9,  FN12, NO,   FN14, TRNS,
+  TRNS, F5,   F6,   F7,   F8,   FN16, SLSH, MINS, EQL,  LBRC, FN8,  TRNS,
+  TRNS, F9,   F10,  F11,  F12,  F15,  F16,  FN22, SCLN, MINS, QUOT, TRNS,
+  TRNS, TRNS, TRNS, TRNS, TRNS,    TRNS,    TRNS, TRNS, TRNS, TRNS, TRNS),
+[2] = KEYMAP( /* Jack LOWER */
+  FN22, 1,    2,    3,   FN13, FN14, FN15, FN16, FN17, FN18, FN19, BSPC,
+  TRNS, 4,    5,    6,   TRNS, TRNS, TRNS, FN20, FN21, FN23, FN24, FN28,
+  TRNS, 7,    8,    9,   0,    FN28, FN15,   F7,   F8,   F9,   F10,  TRNS,
+  TRNS, TRNS, TRNS, TRNS, TRNS,    TRNS,    TRNS, TRNS, TRNS, TRNS, TRNS),
+};
+const uint16_t PROGMEM fn_actions[] = {
+    [1] = ACTION_LAYER_MOMENTARY(1),  // to Fn overlay
+    [2] = ACTION_LAYER_MOMENTARY(2),  // to Fn overlay
+
+    [8]  = ACTION_MODS_KEY(MOD_LSFT, KC_SLSH),
+    [9]  = ACTION_MODS_KEY(MOD_LSFT, KC_QUOT),
+    [10] = ACTION_MODS_KEY(MOD_LSFT, KC_1),
+    [11] = ACTION_MODS_KEY(MOD_LSFT, KC_2),
+    [12] = ACTION_MODS_KEY(MOD_LSFT, KC_3),
+    [13] = ACTION_MODS_KEY(MOD_LSFT, KC_4),
+    [14] = ACTION_MODS_KEY(MOD_LSFT, KC_5),
+    [15] = ACTION_MODS_KEY(MOD_LSFT, KC_6),
+    [16] = ACTION_MODS_KEY(MOD_LSFT, KC_7),
+    [17] = ACTION_MODS_KEY(MOD_LSFT, KC_8),
+    [18] = ACTION_MODS_KEY(MOD_LSFT, KC_9),
+    [19] = ACTION_MODS_KEY(MOD_LSFT, KC_0),
+    [20] = ACTION_MODS_KEY(MOD_LSFT, KC_MINS),
+    [21] = ACTION_MODS_KEY(MOD_LSFT, KC_EQL),
+    [22] = ACTION_MODS_KEY(MOD_LSFT, KC_GRV),
+    [23] = ACTION_MODS_KEY(MOD_LSFT, KC_LBRC),
+    [24] = ACTION_MODS_KEY(MOD_LSFT, KC_RBRC),
+    [28] = ACTION_MODS_KEY(MOD_LSFT, KC_BSLS),
+
+    [29] = ACTION_MODS_KEY(MOD_LSFT | MOD_RSFT, KC_PAUSE),
+};