diff --git a/libs/core/_locales/core-jsdoc-strings.json b/libs/core/_locales/core-jsdoc-strings.json
index b3dc1c6d..21dd525d 100644
--- a/libs/core/_locales/core-jsdoc-strings.json
+++ b/libs/core/_locales/core-jsdoc-strings.json
@@ -28,6 +28,7 @@
   "brick.buttonLeft": "Left button on the EV3 Brick.",
   "brick.buttonRight": "Right button on the EV3 Brick.",
   "brick.buttonUp": "Up button on the EV3 Brick.",
+  "brick.clearScreen": "Clears the screen",
   "brick.lightPattern": "Pattern block.",
   "brick.lightPattern|param|pattern": "the lights pattern to use. eg: LightsPattern.Green",
   "brick.print": "Show text on the screen.",
diff --git a/libs/core/_locales/core-strings.json b/libs/core/_locales/core-strings.json
index 4fc48b38..a90db42f 100644
--- a/libs/core/_locales/core-strings.json
+++ b/libs/core/_locales/core-strings.json
@@ -34,11 +34,12 @@
   "brick.buttonLeft|block": "left",
   "brick.buttonRight|block": "right",
   "brick.buttonUp|block": "up",
+  "brick.clearScreen|block": "`icons.brickDisplay` clear screen",
   "brick.lightPattern|block": "%pattern",
   "brick.print|block": "`icons.brickDisplay` print %text| at x: %x| y: %y",
   "brick.setPixel|block": "`icons.brickDisplay` set pixel %on| at x: %x| y: %y",
   "brick.setStatusLight|block": "set `icons.brickButtons` to %pattern=led_pattern",
-  "brick.showImage|block": "`icons.brickDisplay` show image %image=scren_image_picker",
+  "brick.showImage|block": "`icons.brickDisplay` show image %image=screen_image_picker",
   "brick|block": "brick",
   "control.raiseEvent|block": "raise event|from %src|with value %value",
   "control|block": "control",
diff --git a/libs/core/screen.ts b/libs/core/screen.ts
index d0582d92..bee19974 100644
--- a/libs/core/screen.ts
+++ b/libs/core/screen.ts
@@ -63,16 +63,16 @@ namespace brick {
             firstChar: 32,
             // source https://github.com/lancaster-university/microbit-dal/blob/master/source/core/MicroBitFont.cpp
             data: hex`
-0000000000 0202020002 0a0a000000 0a1f0a1f0a 0e130e190e 1309041219 0609060916 0202000000 0402020204 
-0204040402 000a040a00 00040e0400 0000000402 00000e0000 0000000200 1008040201 0609090906 040604040e 
-070806010f 0f08040906 0c0a091f08 1f010f100f 08040e110e 1f08040201 0e110e110e 0e110e0402 0002000200 
-0004000402 0804020408 000e000e00 0204080402 0e110c0004 0e11151906 06090f0909 0709070907 0e0101010e 
-0709090907 0f0107010f 0f01070101 0e0119110e 09090f0909 0702020207 1f08080906 0905030509 010101010f 
-111b151111 1113151911 0609090906 0709070101 060909060c 0709070911 0e01060807 1f04040404 0909090906 
-1111110a04 1111151b11 0909060909 110a040404 0f0402010f 0e0202020e 0102040810 0e0808080e 040a000000 
-000000001f 0204000000 000e09091e 0101070907 000e01010e 08080e090e 060907010e 0c02070202 0e090e0806 
-0101070909 0200020202 0800080806 0105030509 020202020c 001b151111 0007090909 0006090906 0007090701 
-000e090e08 000e010101 000c020403 02020e021c 000909091e 0011110a04 001111151b 0009060609 00110a0403 
+0000000000 0202020002 0a0a000000 0a1f0a1f0a 0e130e190e 1309041219 0609060916 0202000000 0402020204
+0204040402 000a040a00 00040e0400 0000000402 00000e0000 0000000200 1008040201 0609090906 040604040e
+070806010f 0f08040906 0c0a091f08 1f010f100f 08040e110e 1f08040201 0e110e110e 0e110e0402 0002000200
+0004000402 0804020408 000e000e00 0204080402 0e110c0004 0e11151906 06090f0909 0709070907 0e0101010e
+0709090907 0f0107010f 0f01070101 0e0119110e 09090f0909 0702020207 1f08080906 0905030509 010101010f
+111b151111 1113151911 0609090906 0709070101 060909060c 0709070911 0e01060807 1f04040404 0909090906
+1111110a04 1111151b11 0909060909 110a040404 0f0402010f 0e0202020e 0102040810 0e0808080e 040a000000
+000000001f 0204000000 000e09091e 0101070907 000e01010e 08080e090e 060907010e 0c02070202 0e090e0806
+0101070909 0200020202 0800080806 0105030509 020202020c 001b151111 0007090909 0006090906 0007090701
+000e090e08 000e010101 000c020403 02020e021c 000909091e 0011110a04 001111151b 0009060609 00110a0403
 000f04020f 0c0406040c 0202020202 0302060203 0000061800
 `
         }
@@ -137,7 +137,7 @@ namespace brick {
      * Shows an image on screen
      * @param image image to draw
      */
-    //% blockId=screen_show_image block="`icons.brickDisplay` show image %image=scren_image_picker"
+    //% blockId=screen_show_image block="`icons.brickDisplay` show image %image=screen_image_picker"
     //% weight=95 group="Screen" blockGap=8
     export function showImage(image: Image, delay: number = 400) {
         if (!image) return;
@@ -151,7 +151,7 @@ namespace brick {
      * An image
      * @param image the image
      */
-    //% blockId=scren_image_picker block="%image" shim=TD_ID
+    //% blockId=screen_image_picker block="%image" shim=TD_ID
     //% image.fieldEditor="imagedropdown"
     //% image.fieldOptions.columns=6
     //% image.fieldOptions.hasSearchBar=true
@@ -159,7 +159,16 @@ namespace brick {
     export function _imagePicker(image: Image): Image {
         return image;
     }
-    
+
+    /**
+     * Clears the screen
+     */
+    //% blockId=screen_clear_screen block="`icons.brickDisplay` clear screen"
+    //% weight=94 group="Screen" blockGap=8
+    export function clearScreen() {
+        screen.clear();
+    }
+
     export function drawRect(x: number, y: number, w: number, h: number, mode = Draw.Normal) {
         x |= 0;
         y |= 0;
diff --git a/sim/state/screen.ts b/sim/state/screen.ts
index 572046bc..2ceaa428 100644
--- a/sim/state/screen.ts
+++ b/sim/state/screen.ts
@@ -30,6 +30,7 @@ namespace pxsim {
         clear() {
             for (let i = 0; i < this.points.length; ++i)
                 this.points[i] = 0;
+            this.shouldUpdate = true;
         }
 
         blitLineCore(x: number, y: number, w: number, buf: RefBuffer, mode: Draw, offset = 0) {