Updated the old block to be a little more simplified while still doing the same thing. How it works: Starting at the starter costume, it continuously adds the frame interval and updates costume once the floor of the value is a new whole number How to use: In the block definition, set the start costume Set your FPS. FPS in this case meaning stuff like "12". Not "0.03", that's frame interval. The block detects the final costume and automatically stops once it reaches it. I'm too lazy to modify it to make the end frame settable.