That was a playable teaser. It was awful. They wanted to gauge interest in a full game. This new demo is for the real game. It looks and plays totally different. It's still a bit clunky but much better than the playable teaser.
It's the same demo they have shown to press and others on conventions the past few years. So you might already have seen some scenes from it. They keep updating it. Last time I saw it it didn't even have a save system.
Build an airship and explore floating islands in search of ancient knowledge while fighting against robots and flying fish. It’s a spiritual successor to World’s Adrift, if you’ve heard of that.
The demo is an early build and is buggy and laggy, but it is super fun.
At least a dozen games, I hope. It has become tradition for me to delve deep into next fest demos and try at least 20 or so games from my favorite genres. The last few times I discovered some of my favorite games of recent years. The ones I'm sure so far are only Breathedge 2 and Solar Punk.
It's not a sale. It's an event with demos for upcoming games, usually full of hidden gems. If you're an indie dev, you have to get a demo out in time for one of these (they happen 3 times a year, I think), they are a huge boost in visibility.