I don't think $select->execute($gamename) returns the first (and in fact only) row. Instead, it returns a "success" value, which will always be true, BTW. You have to ask for the value of the first (and only) row.

You can do that, for example, using

$select->execute($gamename);
my($rows) = $select->fetchrow_array; # first row
$select->finish;                     # premature abort: no more rows
if($rows) {   # found
    $update->execute( $gamedesc, $gamecount, $gamename );
}
else {
    $insert->execute( $gamename, $gamedesc, 0 );
}
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The finish tells DBI and the DB you no longer need this instance of the statement handle query. You normally have to call this after a SELECT query where you don't try to deplete the statement handle, fetching rows, thus until it returns undef.

BTW untested, I hope I got it right! :)