Jump. Clack. King me.
Checkers — draughts, if you learned it on the other side of the Atlantic — is one of the oldest board games still on kitchen tables: its ancestor alquerque is thousands of years old, and the modern game was born in medieval France when someone moved the pieces onto a chessboard. The forced-capture rule arrived in the 16th century and has started arguments ever since, which is exactly why it's a toggle here. Computers finally weakly solved the game in 2007 — perfect play by both sides is a draw — but no one at the dinner table plays perfectly.
Play it the rainy-afternoon way — one phone flat on the table like a fold-out board — or take on the computer: Easy plays like a distracted little sibling, Medium falls for a well-laid trap, and Hard reads eight moves ahead. And when someone claims the title from the next room, start a duel: two devices, one live board, every clack on both screens. Free, no ads, no account — everything but the duel works offline.