Walker said Valve used Half-Life games to "solve some interesting collision of technology and art that had reared itself".
wˈɔːkɚ sˈɛd vˈælv jˈuːzd hˈæflˈaɪf ɡˈeɪmz tuː "sˈɑːlv sˌʌm ˈɪntɹɛstɪŋ kəlˈɪʒən ʌv tɛknˈɑːlədʒi ænd ˈɑːɹt ðæt hæd ɹˈɪɹd ɪtsˈɛlf".