As said both in the video and in the KS page, this is a local multiplayer game, so it's meant to be played by up to 4 players on the same computer/TV. A very good reference to make it clearer is The Yawhg.
We're studying the option of adding an online feature, but we must be clear that this is an option that needs to be studied. In the end it all reduces to the cost of it and the funds we have at the moment!
We've built an internal demo that we shared with media and such. We will release it publicly in a month or so. We already did a Chinese demo that we released so we could test as fast as possible the availability and interest of the Chinese market.
If you want to check a video on the demo to get a better grip on the game, we recommend to watch this video: https://www.youtube.com/watch?v=f-qvTlTdRXc
It's HILARIOUS! :D
Once again, it always depends on costs and budget, but our intention is to create more content sooner or later. The game is intended to work in a very modular way, so adding new stuff such as endings or items should be relatively easy. We have tons of crazy stuff planned, but right now we must focus on getting our first goals.
Don't see the answer to your question? Ask the project creator directly.