:D glad you enjoyed the experience.
I spotted a bug thanks to the video (I think it also happened in a previous level): you shouldn't have been able to go around the vertical pipes, it may make things a little easier ;), I have to widen their collider to prevent that (in the previous video I also noted another one, when you managed to go just beneath the rotating security cam without being detected, have to think if I fix that too or leave it as it is).. it's quite helpful to see other people play the levels to spot things like these, seems like no matter how much I test them, something always slips by :)
Yes, I've started working on the story mode, you can see some of my first experiments in my latest dev log. I'm currently a little stuck thinking about the overall design, not sure about some things, and haven't made much progress but hopefully I'll soon figure it out. In any case, no idea when I'll be releasing it, it will take me at least some months to have a first working version even if everything goes well... one step at a time :)
By the way, remember there's a different ending if you finish all the levels with a 100% score (you don't have to replay the whole thing again, just the levels you didn't score the maximum and then go to level 15 to get to the new ending)... if I remember correctly, you'll see, just see, the cat once again in that one :P and I think some of the levels are more fun when you try to perfect them (the bigger ones have multiple paths so trying to solve them different ways can also be interesting).
Any way, once again thanks for taking the time to play the build and make the videos!