HL1 Scientist - STOP
0.9s · Oct 20, 2026
0.9s · Oct 20, 2026
HL1 Scientist - STOP is a 0.9s sound effect. Tap the button to play it, download the free MP3, embed it on your site or add it to a soundboard for your YouTube videos, TikToks, Twitch streams and edits. Added Oct 20, 2026.