Hammurabi: Classic game of strategy and resource allocation
hammurabigame.com
hammurabigame.com
And then you have a plague.
IMHO it's a case where the bugs are a feature. It's simple to implement but there are numerous small ways you can tweak it to make improvements. That make it a fantastic project for learning to program because completing the initial clone version is really just the starting point.
Hammurabi: I beg to report to you, In Year 11, 0 people starved, 3 people came to the city. The city population is now 64 The city now owns 797 acres. You harvested 4 bushels per acre. Rats ate 494 bushels.
In your 10-year term of office, 0 percent of the population starved per year on average, .i.e., a total of 0 people died!! You started with 10 acres per person and ended with 12.453125 acres per person
That is a 536% swing in return for [seemingly] identical starting conditions.
[1] https://archive.org/details/msdos_Hamurabi_1996
[2] http://en.wikipedia.org/wiki/Hamurabi
[3] http://www.dunnington.u-net.com/public/basicgames/HMRABI