VGChartz’s Thomas Froehlicher: “There wasn’t just one but rather two different demos for Sword Art Online Alicization Lycoris at Tokyo Game Show 2019. The first one was focused on exploration and teamplay, while the second one was more narrative driven and including a major boss fight. The exploration demo revealed a few major points. First of all, we now know that the party will include up to four characters fighting alongside eachother at once, and that you can change the leader at any time. In the demo, you start as Kirito, but it was possible to control the original heroine of the game, Medina. Eugeo and Alice were also in the group but weren’t actually playable. Nevertheless, both have been confirmed to be playable by the developers, so this time fans certainly won’t be disappointed about having only one playable character. That in turn is very good news not just from a fan perspective but also in terms of gameplay variety.”
Source: N4G PC Sword Art Online Alicization Lycoris Exceeds Expectations at TGS 2019 | VGChartz Preview