38th Century is a simple world simulation game made from scratch in 72h. When a century is up, use the clues you noticed every decade to make the best investment for the century ahead (in one of defense, health care, industry, or science). If your prediction was correct, your population will be sheltered from the inevitable disasters that strike every 100 years.
Took an extra 24h, but still had to cut a lot of the content and features I planned to include.
Every participant was assigned a random theme, mine was Church 2.
This was the first time I used the Entity-Component-System architecture that I've been working into my game engine. Got a little more done in the 48h than at Ludum Dare 36, but this is still only a prototype where you can walk around the map. Spent way too much time drawing the cathedral!