virtual plagues
...that virtual plagues can infect and kill the characters in a massively multiplayer online role-playing game and are usually caused by unexpected problems with the programming code?
...that <b id="mwASY"><a class="mw-redirect" href="./Virtual_plague" id="mwASc" rel="mw:WikiLink" title="Virtual plague">virtual plagues</a></b> can infect and kill the characters in a <a class="mw-redirect" href="./MMORPG" id="mwASg" rel="mw:WikiLink" title="MMORPG">massively multiplayer online role-playing game</a> and are usually caused by unexpected problems with the <a class="mw-redirect mw-disambig" href="./Code_(computer_programming)" id="mwASk" rel="mw:WikiLink" title="Code (computer programming)">programming code</a>?