In order to keep the game fresh, we have been planning a game-variants feature for a while, that makes it very easy for us to tweak gameplay and run different versions of the game in special competitions and on the playground. The core features are all built out, so we will be making some of these custom competitions soon™.
In addition, internet access will be disabled for algos during games, and there were a number of other security, performance, and quality of life changes.
We will be updating today, so some disruption will be expected until this post is ~2 hours old. Let us know if you have any issues.