I loved Space: 1889. The setting was fantastic, and I also liked the RPG system. But for those who prefer a more nuts and bolts operation, you could try this GURPS conversion for Space: 1889
In Children of Fire, players act as Angels (the Children of Fire), interacting with other angels, and with humans (Children of Clay). To create a character, players choose an order and select various options. Action resolution is stat + 2d10 vs difficulty
A number of companies produce angel figures that would work well with this one.
The Character For Every Game Blog offers some really neat dungeon geomorph tiles, as well as a few nice complete dungeons. Plenty here to look at.
Rob Conely of A Bat In The Attic blog has written a document on making a Fantasy Sandbox.
If you’re of a certain age, you’ll remember the incredibly dense Armory D&D record sheets. You can get a pdf of them here.