I'm not really a history buff so it took a while for the narration + the dates to make sense for me xD I think the level with the dissolution of the Soviet Union one took me longer than I'd like to admit :x I usually end up giving up for puzzle games like these (especially adding the hours LOL, that somehow felt more mind boggling than adding up dates) but I managed to pull through and it was worth it!! Overall really great job, I enjoyed this game!! (On smaller resolutions, the fonts on the gears kinda mess up, like the + looks like a -)