We just updated the builds, but the only difference was fixing a bug in which the sound effects would sometimes remain faded-out if the player left/restarted a level at just the right moment. Pausing and unpausing would set the SFX back to what they should be, but now the issue won't come up at all.
Also, we've tested online co-op using Parsec, and it seems to run well. It's free and easy to use. Only one player needs to have a copy of the game to play co-op. Also note that only one player can use keyboard/mouse controls on Parsec, so at least one player will need to have a gamepad/controller.
While we have your attention, if any of ya'll haven't discovered the games Colestia has been making, you should. We are consistently impressed by Colestia's skill (and speed!) in making meaningful leftist games. If you have 15 USD for our game, Colestia's work is every bit as worthy of love. And if you don't have 15 USD for our game (which is absolutely understandable, especially given that there's no regional pricing on Itch), let us know and we'll try to hook you up.
Thank you all for the support! We did not expect so many people to pay a tip! And thank you all so much for playing!