| 
                     Prototype
                            Differences  
                   | 
                
                
                  | The font for the copyright is different. 
                      It's smaller and the I in Atari isn't capitalized. | 
                
                
                  | 
                      Missing Elmer's
                          house at the top of the screen 
                   | 
                
                
                  | 
                     You
                          cannot steal Elmer's bullets in this version (they
                          don't exist!) 
                   | 
                
                
                  | Likewise the glowing bonus carrots are missing due
                      to the inability to steal bullets | 
                
                
                  | 
                     The hole size is
                          not selectable 
                   | 
                
                
                  | This version
                      contains a bonus timer which is displayed in the lower
                      left corner.  After the hound finds you, the timer
                      starts to slowly count down until you jump in the hole.
                       This determines how many bonus points you get for
                      completing that level. | 
                
                
                  | 
                      The
                          intermission between levels is missing the hound
                          chasing Bugs with Elmer. 
                   | 
                
                
                  | The
                        animation and sounds when Bugs misses the hole are
                        shorter and different. | 
                
                
                  | The
                        scoring in this version is much lower.  The top row
                        is worth 3 points, the middle 2, and the bottom is only
                        worth 1 point. | 
                
                
                  | Extra lives are acquired at 100
                      points instead of 1000. | 
                
                
                  | There are
                        safe zones on the extreme left and right sides of the
                        screen where Elmer can't hit you.  In the later
                        version the safe zone on the far right has been removed
                        and the safe zone on the left only exists on the lowest
                        level. | 
                
                
                  | 
                     Even though Bob Polaro and Allen
                        Murphy's initials appear in the code, they cannot be
                        triggered.  
                   | 
                
                
                  | The left difficulty switch
                      affects how fast Bugs moves in this version.  The
                      right difficulty switch does nothing.  | 
                
                
                  | Elmer's bullets will travel to
                      the bottom of the screen instead of stopping at the level
                      you're on. | 
                
                
                  | The holes and shadow under Bug's feet are brown
                      instead of black | 
                
                
                  | Each of the levels has a brown line under the
                      green grass giving them an illusion of depth |