What is .HWD file extension?
Game replay file, or "demo," created by Hedgewars, a turn-based game similar to the Worms series, but uses hedgehogs instead of worms; saves a replay of a map played by the user; allows users to review previously played games.
After completing a map, Hedgewars asks if you would like to save a demo. If you choose "yes," Hedgewars creates an HWD file that can be used for replay or for sharing with other Hedgewars players.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.