Champions XI
Spin through historic European club-seasons, build your XI, simulate the league phase and survive the knockouts. Win all 15 matches for the perfect run.
Verified pool: 558 club-seasons · 107 clubs · 1955/56–2025/26. Proper competition only; no qualifiers or fabricated squads.
Champions XI FAQ
What is Champions XI: The 15-0 Challenge?
A free browser game where you spin through historic Champions League club-seasons, draft an eleven-player XI, then simulate a league phase and a two-legged knockout bracket. Winning all 15 of your matches with no draws or defeats is the perfect run.
Why 15 matches?
The league phase is eight matches. Finish high enough and you go straight into the knockouts: Round of 16, quarter-final, semi-final and final. A flawless league phase plus five more knockout wins is 15 matches - the 15-0.
How do I draft my XI?
You spin through verified historic club-seasons and assign each drawn squad to an open position in your formation. Every slot is filled from a real Champions League club-season, so your XI is built from legendary teams rather than picked player by player.
What do the formation, era and difficulty options do?
Formation sets the eleven positions you draft into. Era filters your draft pool to All eras, the 2000s, 2010s or 2020s. Difficulty changes your own draft pool - Easy leans toward elite and strong club-seasons, Brutal is mostly underdogs - and sets how many rerolls you get: five on Easy, three on Balanced, one on Brutal.
What are rerolls?
A reroll swaps the current club-season draw for a new one when you do not want to draft it. You have a fixed number per run based on difficulty, so spend them carefully across the eleven picks.
What is the Daily Challenge?
A separate fixed setup that everyone plays on the same day, with the same formation, era, difficulty and draw sequence for all players so runs are directly comparable. The main mode lets you choose your own settings and replay freely.