This is a data serializer. See inside or remix this project to add to your games to save your progress! Also, if you're doing this, the first thing you have to do is get from the custom blocks section the "Write Value" and then write whatever you want in it. Then, you get set "save idx" and set it to 1. Then you get the "Read Value" and attach it to the bottom of "save idx" and then click it, and it should say whatever you put in the input for "Write Value". You can also get another "Write Value", and attach it to the bottom of the other "Write Value" block. Then you just have to click the "Read Value" (ONLY the "Read Value" block)