<a href="https://domain.tld/taigachat/?room=1&full=0">Room 1</a>
<a href="https://domain.tld/taigachat/?room=2&full=0">Room 2</a>
<a href="https://domain.tld/taigachat/?room=3&full=0">Room 3</a>
<a href="https://domain.tld/taigachat/?room=4&full=0">Room 4</a>