diff --git a/libs/core/_locales/core-jsdoc-strings.json b/libs/core/_locales/core-jsdoc-strings.json
index 4eeeb0fa..648bb439 100644
--- a/libs/core/_locales/core-jsdoc-strings.json
+++ b/libs/core/_locales/core-jsdoc-strings.json
@@ -240,6 +240,8 @@
   "serial.delimiters": "Returns the delimiter corresponding string",
   "serial.onDataReceived": "Registers an event to be fired when one of the delimiter is matched.",
   "serial.onDataReceived|param|delimiters": "the characters to match received characters against.",
+  "serial.readBuffer": "Reads multiple characters from the rxBuff and fills a user buffer.",
+  "serial.readBuffer|param|length": "default buffer length, eg: 64",
   "serial.readLine": "Reads a line of text from the serial port.",
   "serial.readString": "Reads the buffered received data as a string",
   "serial.readUntil": "Reads a line of text from the serial port and returns the buffer when the delimiter is met.",
@@ -248,6 +250,7 @@
   "serial.redirect|param|rate": "the new baud rate. eg: 115200",
   "serial.redirect|param|rx": "the new reception pin, eg: SerialPin.P1",
   "serial.redirect|param|tx": "the new transmission pins, eg: SerialPin.P0",
+  "serial.writeBuffer": "Sends a buffer through Serial connection",
   "serial.writeLine": "Prints a line of text to the serial",
   "serial.writeNumber": "Prints a numeric value to the serial",
   "serial.writeString": "Sends a piece of text through Serial connection.",
diff --git a/libs/core/game.ts b/libs/core/game.ts
index 79977275..c008da06 100644
--- a/libs/core/game.ts
+++ b/libs/core/game.ts
@@ -46,8 +46,6 @@ namespace game {
     export function createSprite(x: number, y: number): LedSprite {
         init();
         let p = new LedSprite(x, y);
-        sprites.push(p);
-        plot();
         return p;
     }
 
@@ -648,9 +646,10 @@ namespace game {
          * @param this sprite to delete
          */
         //% weight=59
-        //% blockId="game_delete_sprite" block="delete %this"        
+        //% blockId="game_delete_sprite" block="delete %this"
         public delete(): void {
-            sprites.removeElement(this);
+            if (sprites.removeElement(this))
+                plot();
         }
 
         /**