Bugg i Shell-kod.

//The Batch Bot, by Isak Oskarsson
//Copyright © 2016 by Isak Oskarsson.
@echo off
title Batch Bot 1.0 - Menu
color a
:menu
cls
echo Hello, welcome to my game!
echo What would you like to do?
echo 1) Start
echo 2) Instructions
echo 3) Credits
echo 4) Exit
set /p letter=

if %letter% == 1 goto startgame
if %letter% == 2 goto instructions
if %letter% == 3 goto credits
if %letter% == 4 goto exit
goto menu

:startgame
title Batch Bot 1.0 - Level 1
cls
echo Level 1
ping 1.1.1.1 -n 1 -w 2000>nul
cls
echo Hello! Please enter your name:
set /p name=
ping 1.1.1.1 -n 1 -w 1000>nul
echo Hello, %name%!
ping 1.1.1.1 -n 1 -w 1000>nul
echo How are you?
set /p feel=
ping 1.1.1.1 -n 1 -w 1000>nul
echo You are feeling %feel%?
ping 1.1.1.1 -n 1 -w 1000>nul
echo That's nice.
pause
echo I gotta go.
ping 1.1.1.1 -n 1 -w 1000>nul
echo Bye %name%!!
ping 1.1.1.1 -n 1 -w 1000>nul
cls
echo next level? <y/n>
ping 1.1.1.1 -n 1 -w 1000>nul
set /p ynnny=

if %ynnny% == y goto lvl2
if %ynnny% == n goto menu
pause
goto startgame