gmc-jam-3/objects/obj_advance/KeyPress_90.gml

if menupos == 0
    {
    if tickers == 0
       tickers = 1
    }
if menupos == 1
   {
   global.difficulty += 1
   if global.difficulty == 5
      {
      global.difficulty = 1
      }
   }
if menupos == 2
   {
   instance_create(0,0,object27);
   }
if menupos == 3
   {
   game_end();
   }