It's like geometric construction games, except you can't use a compass. You can draw lines between points, project lines through points, and "average" both lines and points. The dragging motions aren't completely intuitive...

They were designed with touchscreens in mind - I agree tho that it didn't work out exactly as I wanted. Someone did make a playthrough video of it :

https://www.youtube.com/watch?v=UzEytSmwEpk&ab_channel=probi...

Accommodating touchscreens is great. If anything it seemed that the manipulations for points and those for lines are reversed? I kept getting an average when I was expecting a connecting line or an intersection? This may represent something deeper in GA that I haven't internalized yet. Nevertheless, it is possible to complete the game if one keeps trying.