Mercury Fallen has come a long way and there has been a lot of changes. The pre-alpha demo has been updated and is now just the alpha demo as it better reflects the current features in the game. The demo will not receive regular updates like the paid alpha, but will be updated over time as bigger changes are released. 

The alpha demo has built in restrictions such as the removal of saving/loading as well as limiting the  play time to 5 in-game days.

Thanks to everyone who has played the demo and the awesome growing community who have joined the development adventure.