Yay for useless crap. First time I loaded Thundermountain everything seemed meh, until I heard the thunder. I thought it was in the soundscape, but upon opening the decompiled map I saw that they were randomised ambient_generics. So I decided that adding lightning to the thunder would be cool and made some lightning textures, and ta-daa, created this. Includes: five lightning textures one white texture (for the optional white flash) one sample map (.vmf and .bsp) a readme With the default settings, either of the five lightning bolts will strike at 45- to 120-second intervals. Change the logic_timer entity settings to modify the times. To turn on the white flash which occurs every time lightning strikes, enable the "screenoverlay" visgroup and recompile. Enjoy.