Multi-cloud CTF platform

Capture the flag,
on real cloud infrastructure.

A capture-the-flag platform for individual players and security teams. Run live events, solve hands-on challenges in live cloud environments, and compete on global or private leaderboards.

Challenges span multiple cloud and container platforms — we keep adding more.

A complete CTF platform, end to end

Everything you need to play, host, and measure capture-the-flag competitions — on live infrastructure, with the admin tooling real programmes require.

Hands-on live labs

Browser-based terminals and remote desktops running against real cloud environments. Challenges provision isolated sessions on demand and tear them down cleanly when you're done.

Flexible CTF events

Schedule public or private events with registration windows, start/end times, category filters, and per-challenge scoring rules. Run a one-off competition or a recurring programme.

Solo play or team play

Individuals compete on global leaderboards and track personal progress. Teams form around a captain plus co-captains, pool their scores, and coordinate on shared challenges.

Robust flag mechanics

Static and regex flag types, first-blood tracking, duplicate-submission detection, IP and session logging, and rate limiting. Anti-cheat fundamentals built in from day one.

Admin controls for operators

Granular moderator permissions across dozens of capabilities, full audit trail, in-app broadcast notifications, and an event-level admin console — the controls a real programme needs.

Progress worth tracking

Public player profiles, per-category skill progression, solve history, XP, and achievements. Measurable for individual players and aggregate views for team captains.

Built for the way you play

Whether you're sharpening your own skills, running a team, or organising a competition, CloudBattles CTF adapts to the shape of your use case.

Individual players

Free accounts with a public profile, solve history, XP, and achievements. Join public CTF events when they open, or work through the challenge library at your own pace.

Teams

Team-based scoring with a captain-plus-co-captain structure, shared leaderboards, and per-role dashboards. Designed for organising competitions, not just playing.

Event organisers

Schedule private or public events, manage registrations, broadcast updates mid-event, review the audit trail, and moderate submissions with role-based admin tools.

How it works

From account creation to live competition in three steps.

Create your account

Sign up free as an individual, or invite your team. Personal profiles include solve history and progress across categories.

Pick your path

Join a public CTF event, practise against the challenge library, or — for organisations — host your own private competition with full admin controls.

Solve, submit, compete

Challenges run in isolated cloud environments. Submit flags, earn points, watch the leaderboard update, and see your skill progression grow over time.

Built by CloudBreach

Designed by practitioners, not vendors

CloudBattles CTF is built by CloudBreach Ltd, the cloud-security company behind courses used by red teams, blue teams, and security engineers worldwide since 2021.

The same lab orchestration that powers those courses drives CloudBattles CTF: real cloud environments, provisioned on-demand, isolated per session, torn down cleanly. No simulators, no shortcuts.

Ready to play?

Create a free account to try individual challenges, or get in touch to run a CTF for your organisation.