Great job applying the theme. The mechanic is simple but challenging. At first, I thought I could cheat the system by holding the button the entire time, but I noticed that doing that slows doing the device. So, that was a smart mechanic. As for suggestions, perhaps you could add another mechanic to increase the depth of the game. Right now, the left mouse button expands the device, but maybe the right mouse button could contract it to fit into tight spaces. Excellent work!
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Thank you for kind words. That is a very good suggestion, which also came to my mind when designing the game. In the end I decided to go simpliest as possible. instead of adding many different obstacle types and many ways to avoid them. I spend the time to polish the game as much as possible while only keeping the simple single input mechanic.