The first infinity room on Hermitcraft was created by Docm77, which used gray maps that he created over the end void. It was built in an area outside the Stock Exchange. He called this the 'Sensory Deprivation Chamber'.
Grian had independently come up with a similar concept in the same week, but didn't build his infinity room on the server until after Doc's. Originally dubbed the 'Matrix Room', Grian's first infinity room used white maps which he created by flattening a snowy area. He later went on to coin the term 'Infinity Room'.
Notable Infinity Rooms
Architech Meeting Room
Grian's first infinity room was built as an Arcitech meeting room. The original design was whiteness with two wooden chairs. After the maps were Jingled, the place was restored to normal and the meeting began. It was later seen as without the chairs and with "Incriminating evidence" (a poultry man suit) in it.
Grian's original infinity room was rebuilt for another meeting. It was revealed that, despite taking everything back from the G-Team infinity room, Grian was still short on maps and item frames, leaving the exit undecorated. The room got an upgrade here, including new Quartz chairs and an Arcitech logo.
How To Kill A Tango
For Grian's How To Kill A Tango entry, he created another infinity room. Grian pretended to hang Tango before dropping him into an infinity room. Tango was given lava and killed himself in the end.
As part of the Civil War, Grian protected one of the G-Team's flags using an infinity room. He had put the item frames on top of fence gates which were situated over lava, meaning that one wrong step would be a life off for an unsuspecting Team STAR member. Now that’s a good troll! Unfortunately for Grian, none of Team STAR’s members died during Grian’s two challenges. So they captured the flag.
Mumbo Kicked Off Team STAR
Again during the Civil war, Doc used another gray infinity room for him and Rendog to confront Mumbo Jumbo about being a mole for the G-Team. Mumbo was then kicked out of Team STAR and was able to better assist the G-Team.
Sahara Infinity Rooms
Grian also built another two infinity rooms under the Sahara meeting room. The plan was to drop Mumbo and Iskall into the infinity room below and then for them to walk over the wrong spot and fall down into a second infinity room. The original size Grian intended ended up being incredibly laggy, so he had to make it smaller.