MMOs have come a long way in the past twenty years. Back in 1995, Meridian 59 did something unique. It brought MMOs into full 3D worlds.

It launched with a monthly subscription, but eventually went open source and free. Now Meridian 59 is available to a much wider audience. The Steam release is free - though you must register an account first.

Meridian 59 only runs officially on Windows. However, Linux users may be able to run it via Steam Play.