Well, it's a game, but it lacks the polish in my opinion. Especially some sound effects and a main menu could have been added so you wouldn't have to reload the game every time you failed to kill Julius. The clarity could have also been improved as it also took me like 30 seconds to understand how to stab the king, but maybe it's just the dumb me. The them fits the game pretty well, but it might not be as fun for some non-historians like me.
In short, it's a game, but lacks the polish and is a hardly enjoyable experience for non-historians.