Можно ли писать игры используя ТОЛЬКО lua?

    shape = 'H'  --snake shape
    object = '0'  --'apple' shape
    leng = 5  --starting length
    grow = 2  --length add per apple gotten
    width = 50  --width of playing field
    height = 20  --height of playing field
    speed = 300 --speed of game, lower is faster
    
    
    os.execute("cls")
    wait(100)
    loc = {}
    last = {}
    gameover = 0
    pos = (width*height)-(width/2)
    count = 1
    direct = 1
    bord=""
    clear = ""
    for i=1, leng do
        last[i] = pos
    end
    for i=0, (width-2) do
        bord = bord.."="
    end
    for i=0, 75 do
       clear = clear.."\n"
    end
    math.randomseed(os.clock())
    function draw(h)
        apple = math.floor(math.random(2,(width*height)))
       if loc[h]==shape or loc[h]=='|' or pos < 0 or pos > (width*height) then gameover=1 end
       if loc[h]==object then 
            leng = leng + grow end
       n = width
       y = 1
       add = ""
       for i = 1, (width*height) do
        direct = keylisten()
          if loc[i]==' ' or loc[i]==nil or loc[i]==shape then loc[i]=' ' end
          if i >= n then
             loc[i] = "\n"
             loc[i-1] = '|'
             loc[i-(width-1)] = '|'
             y = y + 1
             n = n + width
          end
          
          if iseven(count/15)==1 then loc[apple] = object end
          loc[h] = shape
          last[leng]=h
          for i=1,leng do
            loc[last[i]]=shape
            end
          add = add..loc[i]
       end
       for i=(leng+grow),2,-1 do
        last[i] = last[i-1]
       end
        last[1] = h
        count = count + 1
    end
    function iseven(a)
        if math.floor(a)==a then return 1 else return 0 end
    end
    function keylisten()
       if (keyDown(38)==1) and (direct~=2) then direct=1
       elseif (keyDown(40)==1) and (direct~=1)  then direct=2
       elseif (keyDown(37)==1) and (direct~=4)  then direct=3
       elseif (keyDown(39)==1) and (direct~=3)  then direct=4 end
       return direct
    end
    stime = os.clock()
    while keyDown(35)==0 do
       if gameover==1 then break end
       direct = keylisten()
       if direct==1 then pos = pos-width end
       if direct==2 then pos = pos+width end
       if direct==3 then pos = pos-1 end
       if direct==4 then pos = pos+1 end
       draw(pos)
        print(clear..bord.."\n"..add..bord,255,255,255)
       direct = keylisten()
       wait(speed)
    end
    etime = string.format("%.2f", os.clock()-stime)
    score = string.format("%.2f",leng)
    print("\nYou got a score of: "..score.." points",0,255,200)
    print("\nYou played for: "..etime.." seconds",0,255,200)
    print("\nGame over.",255,255,0)