itch.io

If you installed it via the itch.io PC app, it should automatically update.
If you downloaded the .zip from the itch.io website, you’ll have to download it again.

The momentum-based movement with the “Meatball Mode” reminds me of the N games, which I love to bits. Speaking of which, I don’t like how double-jumping in Meatball Mode makes the player go out of it, rather than the double jump just being barred off in the mode.

At the top of the store page, click the downward arrow next to your username, then click “My library”.
There’s a section called “Things you own”, and if the purchase went through, the game should appear with a button that says “Download”.
Click that, then the “Download” button next to “Buckshot Roulette (Windows)” (if your computer is running on Windows).

There is DLC confirmed for the second game, namely Step expansion DLCs and a wedding DLC, but there aren’t any confirmed DLCs that add additional love interests.
And yes, both games are set in the same universe, so the Baxter you see in the first game is the same one you see in the second.

It turns out that the amount of free space needed for the Android version to run is much more than what the game actually takes up.

I had to have ~8 GB (about 10-15% of my phone’s storage capacity) of free space on my phone for both this and the OLNF demo for them to run, despite the fact that the combined size of both games is ~2.7 GB (without OLBA’s DLC).

(I’ll also note that I had deleted the installation APKs to make more space before I got either game to successfully run, and that the games were run on a Galaxy A30.)