Street Fighter 1 is an interesting case of an historically extremely important game, that just wasn't very good. Which in turn explains why it was largely forgotten and completely overshadowed by its sequel. While it invented most of the conventions for the fighting game genre, it implemented them all in a really clunky way. Special moves can't be triggered with any kind of reliability, jumps don't even follow a smooth arc but just jerk around and the thing is a button masher, due to originally not having the six-button layout of the sequel, but two huge buttons that would register how hard you pushed them. It's barely even a functioning game by modern standards, yet it is the birthplace of a franchise that lasts to this day. It's fascinating seeing all the elements from later fighting game on display in such a rough shape.