What is a good turn-based strategy game for a beginner?

Short answer: Look for three things: a small rule set, games short enough to finish before you lose interest, and nothing to install. Borderfall has all three — the loop is reinforce, attack, fortify, a solo game runs about 10 to 15 minutes, and it starts in a browser tab with no account.

Why those three things

Most strategy games that bounce beginners do it in the first twenty minutes, before any decision has paid off: too many systems introduced at once, a tutorial longer than a match, or an install that asks for commitment before it has earned any. A short game with a small rule set lets you be bad at it cheaply, which is the only way anyone gets good at it.

Where to start here

Start with the tutorial, then a solo game against Easy AI on a small board — Great Britain 925 is fourteen territories and the shortest game in the set. Once the combat maths feels predictable, the American Civil War board is two-sided and has no diplomacy to distract from it. After that, the bigger boards and the harder AI.

The specifics

Rules to learn
Three phases: reinforce, attack, fortify.
Difficulty
AI from Easy to Expert. Easy is genuinely easy.
Typical solo game
About 10–15 minutes.
Price
Free. No purchase required to play any mode.
Install
None. It runs in the browser.
Account
Optional. Guest play starts immediately.