I've got a publish that's in multiple groups and Let me show all of the other posts which are within the related groups. The code below will be a beginning point

<?php query_posts('cat=1&showposts=5'); ?>
 <?php if (have_posts()) : while (have_posts()) : the_post(); ?>
  <li><a href="<?php the_permalink() ?>"><?php the_title(); ?></a>
  <?php the_excerpt() ?>
  </li>
  <?php endwhile; endif; ?>

But clearly incorrect for my scenario... How woudl Time passes about obtaining the groups from the current publish, then exhibiting the publish game titles which are in individuals groups?