Hi ,
the game is starting every full hour, be there one or two minutes earlier to be sure. There have to be at least two players in the yellow room at the full hour to start the game. To earn some small STEEM rewards, you have to connect your STEEM Account to the server. This process is explained in the hourly post of the game. =)
There is a plan to add a solo game if there aren't enough players in the future to get rewards even without other players.
RE: New Steemcraft Minigame match starting in 10 minutes - Earn STEEM by playing Minecraft