Towns - Available on steam, got Greenlit, and now has a demo, only 20mb. Highly recommend it. A cross between Minecraft and Terraria, somewhat similar to settlers 7.

http://store.steampowered.com/app/221020/
http://www.townswiki.com/wiki/Main_Page - Wiki needed during game.

Demo gives you 20days ingame per map so you can play over and over but for a max of 20 days, which is plenty of time to do stuff. Ive racked up 18hrs on the demo so far. A number of environments are available each with different terrains, food sources, enemies. Start with normal as its easier IMO.

The games tutorial is pretty shit but the concept isnt very hard.
You need wood and stone and food which are readily available.
From there, you want to build a carpentry, masonry, hospital and renewable wood and food.
You need to keep your people happy by building personal rooms and decorations and not working them too hard.
Add a market (to get a caravan to come trade), tavern & tavern rooms (to attract heroes which are needed to clear dungeons).
There are a number of other things you need but they tend to require better materials like iron which can be very difficult to find. Just finished demo length and didnt find any but still managed to have a sufficient town.
I dont build walls or roofs, dont think its necessary and requires a lot of material.
You will only attract more people or heroes if your villagers are happy so get a simple setup done then let them chill to increase happiness. Be careful not to lose villagers @ the start of the game cause with only 11 of them initially, if you lose 2 or 3 your productivity will suffer immensely.

Best game i managed was 30 villagers, 5 heroes and was part way thru exploring the 2nd dungeon (this isnt my game below, just a random image).

I find newly released demos often dont install with steam - normally just need to wait a few hours or a day and they magically work. The awesomenauts free weekend thats on, when i click "here" to install or whatever it does nothing. Tried it yesterday and today, nothing.

Yeah, as much as i love steam, it does some weird things.

Dota 2 crashes for me unless i restart steam just before a game. Its the only steam game that does that.

Big Picture and the linux direction thing Valve seem to be taking Steam in looks good though yo

I had a friend who was always pissed that steam wasn't working correctly. When I pointed out he was playing a pirated steam game that had some cracked steam stuff it would screw up his real steam unless he reset it. After that his steam worked without a problem..