Leland CS Club Presents
A 12-hour game jam in San Jose
April 18, 2026 • Leland CS Club
About
What is Jelly Jam?
A day-long hackathon for middle and high school students aged 13-18 years old.
01
Event
In 12 hours, work solo or with a team, to code a game or app. No prior experience needed!
02
Theme
The theme is marine conservation!
03
Awards
Top entries will be showcased and win prizes.
Organizers
The Team
Meet the people behind JellyJam.
Catherine Wang
Lead Organizer
Avni Harsh
Lead Organizer
Maggie Shen
Co-organizer
Eric Ge
Co-organizer
Agastya Kondamuri
Co-organizer
Stephen King
Website Dev
Anisha Patil
Marketing
Rosina Lu
Marketing
Yashika Agarwal
Outreach
Katherine Zhu
Design
Sophia Hao
Outreach
Serena Ni
Website Dev
Day Of
The Schedule
April 18, 2026
9:00 – 9:45
Check In
Get settled, meet your team, and get ready to build.
10:00 – 11:00
Game Dev / Web Deb Workshops
Details coming soon.
12:00 – 1:00
Lunch
Food will be provided!
1:00 – 2:00
Art / UI Workshops
Details coming soon.
2:30 – 3:00
Fun Activities
Take a break and have some fun mid-jam.
4:30 – 5:30
Submissions
Wrap it up and submit your game before time's up.
5:30 – 6:15
Presentations
Show off what you made to everyone in the room.
6:15 – 7:00
Judging + Closing + Announcements
Thanks for coming!
Rules
The Rules
Breaking any of these rules will result in disqualification.
01
Originality
All code and assets must be made during the hackathon, or be CC0 licensed. No pre-made templates are allowed.
02
Teams
Participate in teams of up to 3 people, or go solo.
03
Be Respectful
Be kind to your fellow participants, to the organizers, and to the venue.
Awards
Prizes
Rewards for great work.
1st Place
Gold
TBD — check back soon.
2nd Place
Silver
TBD — check back soon.
3rd Place
Bronze
TBD — check back soon.
Questions
FAQ
Answers to common questions.
What is a hackathon? ↓
A hackathon is a coding event where you build a program from scratch in a short period of time (in our case, 12 hours).
Am I eligible to participate? ↓
All teenagers (13–18) are eligible.
What if I don't have any experience? ↓
That's totally fine! There'll be workshops and mentors throughout the day to help you get unstuck.
Is this free? ↓
Yes, everything is free. Just show up!
What do I need to bring? ↓
A laptop, a charger, and some form of ID.
What kind of projects are allowed? ↓
Any kind of project, as long as it's on theme! We encourage creativity and innovation.
Can I work with others? ↓
Yes! You can form teams of up to 3 people and work together on your projects.