half black Notification Sounds

HEV half life

2 s

HL Button

0 s

Warning Black Mesa

1 s

they're waiting gordon

4 s

HEV suit charging

2 s

Charging

2 s

Stingray

3 s

Half-Life Blip

0 s

half life bug

0 s

Siren

4 s

Half-life Siren

6 s

Half life crowbar

1 s

Half Life Talk

0 s

BMAS Alert Danger

3 s

BMAS Warning Alarm

2 s

Stingray

3 s

Gmod select

0 s

Half man half man

4 s

HEV charge

5 s

Riseshine

7 s

Scientist Heugh

0 s

Scientist WhtRU

2 s

Cuckoo Half Hour

2 s

BMAS Warning

3 s