I like the game concept. However, the UI control method feels limiting. Suggestions: It feels bad to require three clicks to rotate a tile counter-clockwise. So let me rotate tiles counter-clockwise via right-click. (I think right-click can also be implemented in the web version, but I'm unsure how to implement this control scheme in the mobile version.) Let me lock in or mark tiles, to indicate that I'm confident about their current position. A locked tile would be visually indicated somehow...

Is there any way to control the colors of the lines better? All too often they come up barely half a shade different and I have to keep clicking to get a set of colors with decent contrast. I'd like to be able to pick a set of colors once and have them be persistent....

Add some, please! ^-^

I like the game concept. However, the UI control method feels limiting. Suggestions: It feels bad to require three clicks to rotate a tile counter-clockwise. So let me rotate tiles counter-clockwise via right-click. (I think right-click can also be implemented in the web version, but I'm unsure how to implement this control scheme in the mobile version.) Let me lock in or mark tiles, to indicate that I'm confident about their current position. A locked tile would be visually indicated somehow...