Part 2 of The Solus Project is now available for Windows on GOG.com and Steam, greatly increasing the amount of content in this early access space exploration game. This trailer features a look at what part two adds to the game, which is a spiritual successor to The Ball, the previous adventure game from developer Hourences. They say part two more than doubles the length of the game to 6+ hours, and offer the following outline of what that includes:

The story heats up in this second episode. Dark secrets lurk in the depths of this seemingly deserted alien environment and as you venture deeper into the underground you can't shake the feeling you are being watched and followed.
One large new island along with the biggest cave system have been added, giving players an estimated 3-5 hours of additional gameplay and many dozens of new secrets and items. Continue your journey and explore the massive alien world!

As with Part 1 we aim for a classic first person game feeling. Large and complex levels with tons of secrets. Little hand-holding. And a magical but deadly sci fi world to explore at your own pace.