Search for towermax and start the tower.
With htc vive, press the menu-button for the menu console quickly, otherwise you get out.
If this happens, go back with the little window on the bottom right, otherwise the tower will be reloaded and you lose your towerheight!
You can add https://towermax.fitness/tower or https://towermax.fitness/reaction in Supermedium browser to your sites
Virtual Reality Headset
You need a vr-headset with position tracking