Facebook Hackathon: AR Online Augment your world with Spark AR $7,000 in prizes Winners announced 1680 participants
MLH Local Hack Day (2018) Join your local tech community & 200+ other communities around the world for a global 12-hour hackathon & celebration of learning, building, & sharing! $1,500 in prizes Nov 30 – Dec 2, 2018 1010 participants
