diff --git a/keyboards/planck/keymaps/sijmen/keymap.c b/keyboards/planck/keymaps/sijmen/keymap.c
index 5373fb1bb..5c7110a69 100644
--- a/keyboards/planck/keymaps/sijmen/keymap.c
+++ b/keyboards/planck/keymaps/sijmen/keymap.c
@@ -20,6 +20,7 @@ enum {
   _LSHIFT,
   _RSHIFT,
   _NUMBER,
+  _GAME,
   _FUNCTION,
 };
 
@@ -37,8 +38,12 @@ qk_tap_dance_action_t tap_dance_actions[] = {
   [TD_QUOT] = ACTION_TAP_DANCE_DOUBLE(KC_QUOT, S(KC_QUOT)),
 };
 
-const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+enum planck_keycodes {
+  DEFAULT = SAFE_RANGE,
+  GAME
+};
 
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 /* Default
  * ,-----------------------------------------------------------------------------------.
  * |   q  |   d  |   r  |   w  |   b  |      |      |   j  |   f  |   u  |   p  |   ;  |
@@ -129,7 +134,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   {_______, _______,    _______,   _______, KC_LSFT, _______, _______, KC_RSFT, KC_0, KC_DOT, KC_U, KC_I},
 },
 
-/* Function
+/* Game
  * ,-----------------------------------------------------------------------------------.
  * |      |      |      |      |      |      |      |      |  F9  |  F10 |  F11 |  F12 |
  * |------+------+------+------+------+------|------+------+------+------+------+------|
@@ -140,8 +145,26 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * | LCTL | LALT | LGUI |  ESC | LSFT |  TAB | BSPC | RSFT | LEFT | DOWN |  UP  | RGHT |
  * `-----------------------------------------------------------------------------------'
  */
+[_GAME] = {
+  {KC_TAB,  KC_1, KC_2, KC_3, KC_4, KC_5,   KC_6,          KC_7, KC_8, KC_9, KC_0,    KC_BSPC},
+  {KC_ESC,  KC_Q, KC_W, KC_E, KC_R, KC_T,   KC_Y,          KC_U, KC_I, KC_O, KC_P,    KC_SLSH},
+  {KC_LSFT, KC_A, KC_S, KC_D, KC_F, KC_G,   KC_H,          KC_J, KC_K, KC_L, KC_SCLN, KC_ENT },
+  {KC_LCTL, KC_Z, KC_X, KC_C, KC_V, KC_SPC, MO(_FUNCTION), KC_B, KC_N, KC_M, KC_COMM, KC_DOT },
+},
+
+/* Function
+ * ,-----------------------------------------------------------------------------------.
+ * | DFLT | GAME |      |      |      |      |      |      |  F9  |  F10 |  F11 |  F12 |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      | LSFT | LSFT |      |  F5  |  F6  |  F7  |  F8  |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |  ENT |  ENT |      |  F1  |  F2  |  F3  |  F4  |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | LCTL | LALT | LGUI |  ESC | LSFT |  TAB | BSPC | RSFT | LEFT | DOWN |  UP  | RGHT |
+ * `-----------------------------------------------------------------------------------'
+ */
 [_FUNCTION] = {
-  {XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______, _______, XXXXXXX, KC_F9,   KC_F10,  KC_F11,  KC_F12 },
+  {DEFAULT, GAME,    XXXXXXX, XXXXXXX, _______, _______, _______, XXXXXXX, KC_F9,   KC_F10,  KC_F11,  KC_F12 },
   {XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______, _______, XXXXXXX, KC_F5,   KC_F6,   KC_F7,   KC_F8  },
   {XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______, _______, XXXXXXX, KC_F1,   KC_F2,   KC_F3,   KC_F4  },
   {_______, _______, _______, _______, KC_LSFT, _______, _______, KC_RSFT, KC_LEFT, _______, _______, _______},
@@ -172,3 +195,28 @@ const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
   }
   return MACRO_NONE;
 };
+
+static float default_song[][2] = SONG(QWERTY_SOUND);
+static float game_song[][2]    = SONG(COLEMAK_SOUND);
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case DEFAULT:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_DEFAULT);
+        PLAY_SONG(default_song);
+        return false;
+      }
+      break;
+
+    case GAME:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_GAME);
+        PLAY_SONG(game_song);
+        return false;
+      }
+      break;
+  }
+
+  return true;
+}
\ No newline at end of file