Honestly I can't think of one. I bet what Suomi is achieving will be the biggest accomplishment in terms of pure dedication and time in any game respectively. Its hard to compare another game with runescape, but one of the oldest and first game created may have a person who has an accomplishment equal to Suomi or better :P. We all heard about Pacman, and find it a fun amusing arcade game, but many of may not have realized that the first person to accomplish a "perfect game" in Pacman was Billy Mitchell who obtained it in 1999, while Pacman was released in 1980. (19 year gap). As of now I believe six people have accomplished this "perfect game" But the point is that a "perfect game" in Pacman is extremely hard to obtain, and must take thousands and thousands of hours of practice almost to the point where it could have taken more hours than Suomi. It took Billy Mitchell 6 hours to complete that "perfect game" in which he had to do the following: Never die once. Not once – the entire game must be beaten on the first man. Eat every dot. Eat every energizer. Eat every blue ghost. (Must do 4 times each energizer, for a total of 16 each level) Eat every piece of fruit. Make it to the 256th level. For those of you who have played pacman before, you probably understand and realize how hard it is to do things like eat every ghost in the first level, nonetheless imagine the last level.