what secret place?
Edit: I looked it on internet. Whoah, I can't believe I didn't find this.
It's the old game, the oldest one, from when it wasn't called fragments of euclid. NuSan was testing the teleportation, in FoE apparently he added the rotation of the view and with it, so much more to do in the game than just activate cirlces. That's an idea @NuSan you could make a sequel in which the game isn't a puzzle game about activating stuff, but a game with a story that unravels in this weird impossible game. For example it could be set after you meet Euclid. He tells you that you are in his world. A world were geometry isn't bound to the laws of nature and he could create new more interesting things. He tells you that he was training you. Training you to navigate this world and save it from an invading force. xd