Inspiration for this game (Buzzer wire) I have from along time and this picture explains that clearly :-)
I use TinkerCad for simulation https://www.tinkercad.com/
Cardboard to make simple design
Wires to make connections
Led to light if the two wires touches
Resistor 220 ohm to protect the Led from being burned
Buzzer to make noise if the two wires touches
Dip switch to close and open the game
Adaptor 5V (use small voltage source to ensure the safety)
TO better view check the circuit by your self
1) Make the circuit on tinkercad and make sure from connections and it work correctly
Note: Yellow wire is the positive of buzzer (Which will be connected to cupper wires of the game)
2)Make small fidality prototype to install the wire on it
Make the connections real
(connect the positive of buzzer with the movable wire and the positive of circuit with the stationary wire)
Finally Play
While Hackathon (the hackathon objective is to Build a simple Sumo RC Car by design, fabricating, Wiring and integrating all the components. Fight your opponents in a Sumo Car tournament! ) I face Dragon team in final. I got inspired from its design.
The specific thing I got inspired is that using the Custer wheel connection (Bolt and nuts ) to make the slope. It was a simple and effective design.
The hardest one (Meets Expectations) :-)
As I did the documentation without using breadboard on my TinckerCad or in my connections, It was working but I had to repeat it using breadboard
And connections were in series not in parallel