Love the game but I second improving the scoring mechanics.
I was 40 years off and less than 5km from the place and "only" got 7829. Assuming 99% accuracy for location, and based on some back-of-the-napkin math, that means you have to be within 70.7 years of the actual event to register any points for guessing the correct time. I think If you're within 100 years of the event you should get points. I think ideally it should be a curve, but if you can't program a curve then perhaps create brackets, like -10 points for each year within 10 years, -25 points for each year between 10 and 25 years, and -50 points for each year past that. Using this method you can be +/- 115 years of an event before getting 0 points for the time portion, and the closer you are, the closer to 5000 points you achieve.
Also, the one event was credited as being in Rome, although the picture shows, and the description says, St. Peter's Basilica, which is in Vatican City.
Fair point on the scoring, seems like a lot of people feel that way. Right now, half your points come from distance in km, and half come from distance in years. So you probably got 5000 points for location, and lost points on the year. But it's probably a bit too harsh right now.
What about going logarithmic with time?
The more it's in the past the more errors are forgiven.
Explained in another way use the relative time difference (diff/(now-value)) to compute the score and not the absolute time difference
Location accuracy probably should be sinusoidal where the score is not really effected if the pointer is within ~10-20km of the event.
For dates, I think it needs to take into account how far back something occurred, with recent history being +/-5 years, early modern being +/- 50 years, and ancient history being +/-500 years. That's closer to the resolution we think of events in (decades, centuries, millennia). You could probably even update the UI to have these graduations.
I was 40 years off and less than 5km from the place and "only" got 7829. Assuming 99% accuracy for location, and based on some back-of-the-napkin math, that means you have to be within 70.7 years of the actual event to register any points for guessing the correct time. I think If you're within 100 years of the event you should get points. I think ideally it should be a curve, but if you can't program a curve then perhaps create brackets, like -10 points for each year within 10 years, -25 points for each year between 10 and 25 years, and -50 points for each year past that. Using this method you can be +/- 115 years of an event before getting 0 points for the time portion, and the closer you are, the closer to 5000 points you achieve.
Also, the one event was credited as being in Rome, although the picture shows, and the description says, St. Peter's Basilica, which is in Vatican City.