Use right arrow and up arrow to excite electron with light photons. You can keep pressing up arrow to raise its potential energy. Then move it along the electron transport chain with right arrow. Or use mouse. After finishing photosystem 2, you move to photosystem 1 and proceed in the same way. As the electrons go down the transport chain, like a waterfall, the electron's extra energy is converted to a stored energy form. First draft. First I wanted to focus on the excitation and transport. I may add the proton gradient fueling ATP and so on.
This is photosynthesis electron transport for sugar and ATP. The potential energy of the electron is like potential energy of a raised object as in a waterfall, or when a character jumps to a higher platform (I looked at platform game setups for that). As the electron moves down the chain it transfers energy powering production of ATP (via proton gradient) and NADPH used to force the electron on CO2 to make sugar.
