Half the fun is the gap between what you expect and who actually shows up. Cambodia anchors this page, but Southeast Asia is a big place, and Timor Leste and Laos are part of the same pool of strangers waiting to connect.
The main language in Cambodia is Khmer. Fluency is not the point — hello, thank you and goodbye cover more ground than you would expect, and short English sentences fill the rest of the gap.
If you want more than a two-line exchange, go by the clock. Cambodia is on UTC+7, which puts 9pm local at 7:30pm in Mumbai and 3pm in Lagos — comfortably inside most people's free time.
Free in every mode. Whether a conversation ends up in Khmer or English, the price is the same — nothing — and there is no premium queue that gets matched faster.
No registration. The queue you join from Cambodia is the same global one the rest of Southeast Asia uses, and it opens on a single click rather than a signup form.
Expect Khmer to open the chat. If you do not share it, keep your English short and let video carry some of the meaning that words cannot.
Aim for the evening in Cambodia. At UTC+7, 9pm local converts to 7:30pm for anyone in Mumbai and 3pm in Lagos, which catches people winding down rather than heading out.