Welcome to Sky’s the Limit - Cloud9 x JetBrains Hackathon

Cloud9 is bringing its competitive spirit from the arena to the dev world—with a global hackathon built to ignite creativity, sharpen skills, and bring bold ideas to life. As one of the most storied organizations in esports, Cloud9 is known for championship rosters, fierce innovation, and a community that pushes the boundaries of what’s possible. Whether you’re a gamer, a builder, or a curious creator, this is your chance to level up alongside a team that never stops evolving.

In this hackathon, entrants will build or update a working application using the tools of their choice—plus optional support from JetBrains’ AI Coding Agent, Junie. Junie can help accelerate your workflow and unlock new ways to create, but the real spotlight is on you and the ideas you bring to the table.

With exclusive resources like official esports data for League of Legends and VALORANT provided by GRID, expert guidance, and a prize pool that rewards innovation, this is your arena. Pick a category, lock in, and show Cloud9 what you can build.

Why join?
  • Experiment with JetBrains IDEs + AI Coding Agent Junie

  • Official data provided by GRID
  • Compete for $25k cash prizes, GDC tickets + travel, and Cloud9 swag

Get Started

Requirements

What to Build

Entrants must build or update a working application that uses JetBrains IDEs and Junie and submit it into one of the following categories:

  • Category 1 - A comprehensive Assistant Coach powered by Data Science and AI: that merges micro-level player analytics with macro-level strategic review. Inspired by Moneyball (Jonah Hill’s Peter Brand), this near-real-time application analyzes historical match data to provide a holistic and actionable review. The platform crunches the numbers to identify recurring individual mistakes and connects them directly to their impact on team-wide macro strategy, generating targeted insights for coaches and players.

  • Category 2 - Automated Scouting Report Generator: An application that, given an upcoming opponent, automatically scours GRID data from their recent matches to generate a concise scouting report. The report would highlight common strategies, player tendencies, and default site setups (for VAL), or recently played comps (for LoL & VAL).

  • Category 3 - AI Drafting Assistant/Drafting Predictor (LoL): Develop a tool that analyzes historical GRID data (team compositions, player champion/agent pools, win rates, champion synergies, patch data, recent games history) to recommend optimal draft strategies, picks, and bans against specific opponents in real-time during the pick/ban phase.

  • Category 4 - Event Game: Develop a mini-game that can be played by fans at a LCS or VCT Event Booth or Finals Activation. The winning project will be integrated into a future Cloud9 & JetBrains Event Booth.

Please read through the Submission Specifics page for full details.

What to Submit

  • Provide a URL to your code repository for judging and testing.

    • The repository must contain all necessary source code, assets, and instructions required for the project to be functional. The repository must be public with an approved OSI Open Source License in the About Me section. 

  • Include a video (about 3 minutes) that demonstrates your submission. Videos must be uploaded to YouTube, Vimeo, or Facebook Video and made public.

  • Identify which category you are submitting into.

  • Fully completed Devpost submission form.

Please check the Official Rules for full details.

Hackathon Sponsors

Prizes

$25,000 in prizes
Category 1: Best of Comprehensive Assistant Coach
$6,000 in cash
1 winner

• $6,000 (USD) Cash
• $100 Cloud9 Store Gift Card
• 100% discount to 1 JetBrains All Product Pack (1-year individual subscription)
• GDC Event Tickets (Festival Pass)
• All Expense Paid Trip to GDC (Flight & Hotel)

Category 2: Best of Automated Scouting Report Generator
$6,000 in cash
1 winner

• $6,000 (USD) Cash
• $100 Cloud9 Store Gift Card
• 100% discount to 1 JetBrains All Product Pack (1-year individual subscription)
• GDC Event Tickets (Festival Pass)
• All Expense Paid Trip to GDC (Flight & Hotel)

Category 3: Best of AI Drafting Assistant/Predictor
$6,000 in cash
1 winner

• $6,000 (USD) Cash
• $100 Cloud9 Store Gift Card
• 100% discount to 1 JetBrains All Product Pack (1-year individual subscription)
• GDC Event Tickets (Festival Pass)
• All Expense Paid Trip to GDC (Flight & Hotel)

Category 4: Best of Event Game
$4,000 in cash
1 winner

• $4,000 (USD) Cash
• $100 Cloud9 Store Gift Card
• 100% discount to 1 JetBrains All Product Pack (1-year individual subscription)
• GDC Event Tickets (Festival Pass)
• All Expense Paid Trip to GDC (Flight & Hotel)

Best Video Submission
$1,000 in cash
1 winner

• $1,000 (USD) Cash
• $100 Cloud9 Store Gift Card
• 100% discount to 1 JetBrains All Product Pack (1-year individual subscription)

Most Valuable JetBrains Software or Junie Feedback
$1,000 in cash
1 winner

• $1,000 (USD) Cash
• $100 Cloud9 Store Gift Card
• 100% discount to 1 JetBrains All Product Pack (1-year individual subscription)

Best Written Blog Post
$1,000 in cash
1 winner

• $1,000 (USD) Cash
• $100 Cloud9 Store Gift Card
• 100% discount to 1 JetBrains All Product Pack (1-year individual subscription)

Devpost Achievements

Submitting to this hackathon could earn you:

Judges

Tobias Lindenbauer

Tobias Lindenbauer
Researcher in AI Agents & Planning | JetBrains

Alex Berezoutsky

Alex Berezoutsky
Engineering Manager @ JetBrains Cloud Platform | JetBrains

Kirill Gelvan

Kirill Gelvan
AI Agents & Planning | JetBrains

Alexandra Eliseeva

Alexandra Eliseeva
Researcher @ AI Agents & Planning | JetBrains

Vlad Konstantinov

Vlad Konstantinov
QA Engineer | Compose Multiplatform | JetBrains

Jack Etienne

Jack Etienne
CEO & Co-Founder | Cloud9

Halee Mason

Halee Mason
Vice President of Partnerships and Technology | Cloud9

Julien Cheng

Julien Cheng
Software Engineer & Infrastructure Engineer | Cloud9

Sam Saxena

Sam Saxena
Data Scientist | Cloud9

Nick “Inero” Smith

Nick “Inero” Smith
League of Legends Head Coach | Cloud9

Ian “Immi” Harding

Ian “Immi” Harding
VALORANT Head Coach | Cloud9

Topher Miller

Topher Miller
Partnerships Manager | Cloud9

Andrew La

Andrew La
Events Manager | Cloud9

Judging Criteria

  • Technological Implementation
    Does the project demonstrate quality software development? Does the project leverage the JetBrains IDEs or AI Coding Agent Junie (encouraged)? How is the quality of the code?
  • Design
    Is the user experience and design of the project well thought out?
  • Potential Impact
    How big of an impact could the project have on the specific community or target audience?
  • Quality of the Idea
    How creative and unique is the project?

Questions? Email the hackathon manager

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