Hytale still needs to come out. We need proper competition to Minecraft, something Rising World shall be whether it wants to or not. Depending on what Red51 does it can even kick it to the side. I even noted how Red51's train thoughts and plans could potentially put other train games to shame with how sloppy or bloated their games tend to be. Traincraft mod for Minecaft is perfect with how themed and detailed it was. Felt like actual trains. There are games trying to fill in the void, and I do appreciate them, it's however still "too few" and "too young" for them to even properly fill in those necessary voids. Rising World is also still sadly too far back to yet contribute to this void.
Yes it will be competition for Minecraft amongst older players depending on how much promotion for it occurs. Minecraft and Roblox will still hold appeal to younger mob and those who have a nostalgia for it. Too few and too young for sure as we are only on the outer rim of this whole type of Genre.
I've tried Second Life, I've enjoyed my stay there. I sadly faded out while also stupidly stalking an anime blogging buddy there. Even if I wanted to go back I've lost my account. I was gifted a loli kitsune avatar wanting to get back, I can't now. I flew planes, I visited Ottawa (I think), among other places. Maybe I could try poking around here and there. I've tried playing Second Life and Minecraft back in the day trying to get the buddy back into Minecraft, I feel bad all around. VRChat is where it's at for me. VRChat has everything I've seen Second Life do, and more, and it's VR also. Even if I've been socially evicted from VRChat, and people have moved on, VRChat still feels like home with how much of an impact it made to me and vice-versa.
Secondlife/Opensim do have this atmosphere where infatuation can easily occur so have to have good boundaries. We do get attached to certain games but I try to form a variety of friendships amongst different games and social groups.