Changing resolution?

Hi, can anyone help me with changing the resolution of the game? My monitor is 1600x900, but the in game options don’t go that high, and when I choose 16:9 (widescreen), nothing happens. Thanks!

I am having the exact same problem on my laptop. The resolution only goes to 1024 x 768, and widescreen changes do nothing when applied. Does anyone have a fix?

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.