“Livescreamers” (* out of four) was an unbearable horror psychodrama sequel to “Livescream” set entirely on a computer in which a group of friends (Paul Warren, Michael Smallwood, and others) realize an online video game is systematically killing them all one by one. Top candidate for most unnecessary sequel of the year and filled with wall-to-wall annoying characters. Did anybody even like (or remember) the original?