Rubuta ci gaba don wannan sakin layi - A watan Maris na 2011, don mayar da martani ga ƙirƙirar mod ɗin mai harbi na makaranta mai taken "", wanda Checkerboarded Studios ya haɓaka akan injin Valve's Source, Thompson ya aika da imel ga manajan darektan Valve, Gabe Newell, yana buƙatar a cire mod ɗin, kamar yadda ya yi hasashen cewa Valve ya taka rawa a ci gaban mod ɗin. A cikin wasikar, Thompson ya bayyana cewa "Half-Life" ne kai tsaye ke da alhakin kisan gillar makarantar Erfurt
, kazalika da kisan gillar Virginia Tech da kuma cewa Valve yana da har zuwa 5:00 PM a ranar 18 ga Maris don cire mod.