Hi sulfericacid
If you use appropriate code-editor it will indent for you automatically as you type. I use emacs, and it works very well. Besides indenting there are lots of other features in emacs, like auto-typing , hiding certain code while developing, auto-ftp etc..

example for indentation from your code:

while ($tries < $allowed) {

    print "  Your guess:  ";
    chomp($guess = <STDIN>);
    $tries++;

    if ($guess eq $answer) {
    last;
    } elsif ($guess > $answer) {
    print "                 $guess is too high!\n";
    } elsif ($guess < $answer) {
    print "                 $guess is too low!\n";
    }    
}
[download]

If you like to use emacs visit:http://www.gnu.org/software/emacs/. It's worth investment of time.

One more point, make your code little modular. That would increase the readability also.

artist