Eureka: Investigative Urban Fantasy uses font that is larger than most other games, which is easier to read, but takes up more space on the page. The word count, i.e. the time it takes to read, is actually shorter than every WotC edition of D&D, every edition of Pathfinder, and every edition of CoC. By those metrics it's actually a little under 200 pages, and more than half of that is character options. It does not take any more time to read than any other RPG of its scope. (Most TTRPGs, Eureka included, also tend to have exaggerated page space because of how many lists, tables, and pieces of artwork are there.)