Small game idea I've had for a while:
You're taking a history exam. You haven't studied. The exam is about some completely fictional event in a fictional country. It's all multiple choice questions about this made-up history. Here's the trick, though: the exam is really poorly made, in that way where a lot of the questions (and the answers they give) inadvertently give hints to the answers of different questions.
So you'll get, for example, "who assassinated Chancellor Eurich?" and "who was the Chancellor in 1895" and "what event in early 1896 precipitated the Great Power Struggle" You have to determine from the test itself what the answers are and get as good a score as you can.