Operation Sea Lion

Borderfall Daily Challenge — 18 September 2026

The continent is yours from Norway to Sicily. Britain and Iberia are not, and the Western Front is not won without them.

Objective: Control all of Western Front and hold it through the enemy’s turn.

No registered commander logged a result on this one.

The setup

Date

18 September 2026

Puzzle type

Region control

Era

Ww2

Opponents

1 AI (medium)

Turn limit

11 turns

Par

4 turns

Play today's challenge

Borderfall sets a new puzzle every day: a hand-built position on a world map, the same one for everyone, solvable in a few minutes. It is free, runs in the browser, and you can play as a guest without making an account.