From the second demo test onwards, anyone who donates have the chance, if they so wish for advanced access. Right now that means being able to play through the entire Start game and what little exists so far of the Mid game.
Demo for everyone else includes only the option to view creations (Universe model supplied in folder), until more content can be provided.
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My super-secret-project for several months now, Dreamland began as an idea as a Graphical Multi-User-Dungeon. You'd create your races (Humans, Dwarfs, Elves), the land and seas they live and travel on, the settlements they sleep in, and then play in it.
Then I thought, why stop there? Why not create the planet, evolve those races, build those settlements, heck, even build the mountains and oceans.
Then I thought (dumbly) why stop there? Why not create an entire Solar system, or a local cluster, a galaxy, a Universe?
So now I have a game that creates a Universe, builds stars, builds planets, and THEN starts on Life. If it gets into a fit state, I might even release it.