India, Oct. 29 -- A spider-shaped bomb-diffusing robot developed by students in Assam, affordable bone-conduction smart glasses designed by a Uttar Pradesh team and an urban air-purification concept from Gujarat were among the 10 national-level winners of the Viksit Bharat Buildathon 2025, which entered the Guinness World Records as the "Largest Innovation Solution Competition" with 287,967 project submissions across both idea and prototype tracks.

The 10 winning teams received a combined cash prize of Rs.17.50 lakh, while the nationwide initiative had an award pool of more than Rs.1 crore across district, state and national levels.

The national awards comprised five winners in the prototype track, each receiving Rs.2.5 lakh for their w...