Game Room is back and quite a few changes have been made. From the room, you will find that the Infernos and Ultimate Apozen are gone and have been replaced with a Donom Machine. The room also looks a little different from before with a couple graphics changed. The items spawned in the chest have also changed, now only spawns Gun, Mitova, Good Force Wings and Fire Force Wings. So Gold, Phoenix Potion, Reward Scroll, Scroll of Anundo, Scroll of Halowdale and Toilet Paper don't spawn any longer. The spawn times for the items in the chest are below.
Gun - 3 hours and 55 minutes
Mitova - 3 hours and 55 minutes
Good Force Wings - 14 hours and 47 minutes
Fire Force Wings - 14 hours and 47 minutes
So where is this Game Room? Game Room is now located within the Hall of Borg. Below are pictures of the path leading to the room but for a quick explanation there is a secret wall within the room full of Tarentudas. If you walk to the bottom of the map, walk into the wall with the last flashing red light. It will warp you onto a caged path, walk through it and there will be an enclosed area to the entrance of the Game Room, in there you will find the chest and Donom Machine. So now for the pictures.
I hope this guide helps and remember to feel free to always ask any questions, I'll try help out as much as possible.