A classic mathematical duel: take as many tokens as you like from a single row, but only one player can be left holding the last one.
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How to play
Several rows hold a handful of tokens. Players alternate turns, and on each turn you remove any number of tokens, but all from a single row. The convention you pick decides who wins.
Normal play: the player who takes the very last token WINS.
Misere play: the player forced to take the last token LOSES.
Click a token to clear it and every token to its right in that same row.
You must remove at least one token, and you can never take from two rows at once.
Controls
Desktop: click any token to take it plus everything to its right in that row.
Phone & tablet: tap a token to make the same move, no keyboard needed.
Game modes
Solo vs CPU at Easy, Medium or Hard, choosing whether you or the AI moves first.
2-player pass-and-play on one device (a live nim-sum readout is shown).
Online play: host an invite, join with a code, or quick-match a stranger.
Tips & strategy
Track the nim-sum: XOR the row sizes together and aim to hand your opponent a position that sums to zero.
Misere only diverges from normal play in the endgame, when rows of two-or-more run out, flip your last-token plan.
About Nim
Nim is an ancient public-domain take-away game and a cornerstone of combinatorial game theory. This is an original, free browser version with a perfect-play AI, hotseat and online modes.
A free, original browser game on PlayPendium. No download, no install.
