With the exponential growth in communication and multimedia devices, educators around the globe have been experimenting and innovating newer ways to engage students in a more immersive and enjoyable way. Games, especially serious games or educational games, have had a proven effect on marketing, sales, and behavioral changes, and have now increasingly gained momentum in K12 and higher education primarily to enhance learner engagement and motivation. This paper presents a work-in-progress towards developing serious games as supplemental material in teaching few topics such as Zener Diode and Bipolar Junction Transistor for freshmen engineering students. Two storyboards of game-based learning are presented in this paper along with the design strategy and target core motivational drives. The development of the first levels of the proposed games is nearing completion and theoretical validation on Octalysis framework is presented in the paper. Student reception and feedback is expected to be completed in the next few weeks.