This needs some major work. . .but its playable
Firstly, I dont see why you couldnt incorporate the 'UNDO' option into the first "phase" of your game, because there are quite a few options that the player is given to wade thru until the correct option is chosen. Choosing wrongly makes the player have to redo the first portion of the game over and over, unless luckily, they choose right. Having to redo over and over really takes away from the playing experience(I do like that you did it later though). Secondly, this needed to be longer, maybe you were testing the waters or something, but if this is a 'completed' work, then you really need to sit down and think or more creative ways to continue the journey, cause the length of this game, including all the possible mistakes, and redo's, is about 4-5mins(for me anyway) Lastly, the music, which is fine, isnt long enough, and when it loops, it is VERY noticable, try to work on the length, or do a better job music editing, and this should be taken care of. One more thing, plaease dont think Im blasting you, I am only critiquing you, and I hope you take this as such, and try to improve upon your game.