push @s, &share( { $cmd => time } }; ## The & before share() is important here; and one of the few times you should ever use it.
## or
push @s, &share_clone( { $cmd => time } }; 
## or 
my %hash : shared = ( $cmd => time() );
push @s, \%hash;

##</code><code>##

my @array : shared;
$array[ 0 ] = 'fred'; ## ok
$array[ 1 ] = 12345; ## ok
$array[ 2 ] = [ 1,2,3 ] ## NOT OK
$array[ 2 ] = &share( [ 1,2,3 ] ); ## OK
$array[ 3 ] = { 'a'..'z' }; ## NOT OK
my %hash : shared = ( 'a' .. 'z' );
$array[ 3 ] = \%hash; ## OK

##</code><code>##

$World = { 
  Players => [ 
   "player1" => { # each key is a player id
     ID=>"player1", HP=>9999, MP=>2000, coX=>0, coY=>0,
     Equip => [ qw/xxxSword yyyShield/ ],
     Magic => [ qw/Earthquake/ ],
     Invent => { Cure => 1, Poison => 3 } 
   },
   "playerx" => { ... } 
  ],
  Monsters=>{
    MonsterA => [ 
      "coX1-coY1", "coX2-coY2", ...
    ]
    MonsterB => [
      "coX1-coY1", "coX2-coY2", ...
    ]
  }
};