How to Play Curveball.gg

Curveball.gg is a free browser baseball simulation. Assemble your roster, set your lineup, and play full nine-inning games against other managers — every at-bat simulated live. Here is how to get started in three steps.

1. Build a club

Name your club, pick your colors and crest, and take a fresh 25-player rookie roster to start.

2. Set your nine

Fill out your batting order and pitching staff. Sign new players at Roulette and the Speakeasy.

3. Play a live game

Open a lobby at The Grounds and play another manager pitch by pitch — no fast-forward to the final score.

Ready to start? Create your club — it is free and runs entirely in your browser.