Reddit’s Game of the Day Hackathon Online Join Reddit to build incredible daily games! $35,000 in prizes Dec 08, 2026 09:00 PM EST to submit 1024 participants
SLAY HACKS Online Build bold. Code creatively. Slay real-world challenges. A hackathon for curious beginners and passionate builders to turn fresh ideas into working projects. $4,500 in prizes Dec 07, 2026 05:00 PM EST to submit 209 participants
Deck the Pixels Online A holiday design challenge with Nano Banana in Adobe Photoshop $25,000 in prizes Dec 07, 2026 04:00 PM EST to submit 533 participants
STEM2Connect AI Hackathon Online Build AI-powered solutions to real-world challenges in education, healthcare, sustainability, scientific research, and community impact. Non-monetary prizes Nov 21, 2026 11:59 PM EST to submit 489 participants
STEMergent Hacks 2026 Online A student hackathon and ideathon to build creative tech solutions for real community problems. Non-monetary prizes Nov 15, 2026 10:30 PM EST to submit 360 participants
DSH Hacks V2 ($100k+ in prizes!) Online Building meaningful technical products in AI and healthcare that solve real-world problems. Non-monetary prizes Nov 15, 2026 02:45 AM EST to submit 1219 participants
Build, Demo, and Take Home a Working AI Support Bot Sunnyvale, CA, USA Learn to build an AI support bot that answers questions, guides users through a task, and connects them with a human when needed. $750 in prizes Nov 6 – 12, 2026 117 participants
DATANOVA 2026 GLOBAL DATA-THON Online Not just a hackathon. A platform for meaningful innovation. $1,750 in prizes Winners TBD 174 participants
Girls Who Code HHS Hackathon 2026 Online Level up your gameplay, level up the world. Build a game for social good. $50 in prizes Winners TBD 100 participants