Worldsmith belongs to a category that is still pretty rare, even in this age of growing opportunities for commercial IF: it’s for-sale parser IF. A demo is available for free, but the full version is $5.99. Not only that, but the author has collaborated with furkle (of SPY INTRIGUE fame) to skin an Inform 7 game with images, video, hyperlinks and custom menus. The surrounding images help communicate status information, with images of the NPCs you’re conversing with, and/or the planet you’re currently constructing.
Then there’s the gameplay. Worldsmith is heavy on both simulation and procedural text; I’ve seen a lot of authors start work that made ambitious use of those, but very few actually finish something of that scope and complexity.
The essential premise is that you are a world-builder in competition with several other world-builders (a very high-powered version of the Great British Bake-Off, perhaps). In order to do this, you must combine fundamental elements such as Air and Fire to make planets; set the planets in chosen orbits in your pet solar system; seed those planets with life; and then nurture the life to a degree of sentience that will survive in the wider universe and be able to leave its home planet before said planet becomes uninhabitable.
So far as I’ve seen, this is very much a systems game rather than a puzzle game. There is loads of information to learn about how various elements combine and what sorts of creatures they are likely to produce. Though you get a tutorial (a rather exasperated encounter with your teacher, who evidently feels that you really should have mastered the elements of world-construction by now), there’s a dizzying amount to retain, and you’ll likely find yourself reviewing your instruction manual quite a lot.
I haven’t managed to win. On the contrary, I’ve made a series of half-baked planets and seeded unsuccessful life on them, and needed to restart several times. (It turns out that if you teach your lifeforms too much too quickly, they’ll probably just destroy themselves, so slow up, Prometheus.) But I feel like I’m learning, so this is good restarting, rather than the bad frustrating restarting when a puzzle game has gone unwinnable.
In response to the decisions you make, your world is formed with differently described land forms, creatures, and technologies. It’s probably the closest thing to Spore-in-text-form that I’ve seen.
Still, eventually I realized that if I wanted to blog about this piece, I was going to have to go against my usual preference and write it up without having played the whole thing. So that’s a big caveat. I have some things to point out about Worldsmith but I have not seen anything near all of it, and certainly not most of its storyline.