There’s one game a day, the same for everyone. You hold a baseball card, and the game names a stat from the season on its back: home runs, hits, ERA. A challenger card comes in with its number hidden. Keep your card or take theirs.

Right answers are outs. Three outs make an inning, and each inning the two numbers are closer together. One miss ends the run, but every run has one mulligan. Between innings, a question about your card doubles the inning’s points.

The daily game is free and needs no account. With a free Card Cabinet account you keep your points, build a streak and open six more stages, including one played with the cards in your own collection.

Stats from the Lahman Baseball Database (SABR), used under the Creative Commons Attribution-ShareAlike 3.0 license.