Gnomotron is a mini game that can be unlocked when all of the gnomes are collected.
The room is empty, except a large gate forming a circle around Nick. This gate provides enough room to run. Gnomes appear inside the gate.
Gnomes will appear inside the gate. The player must use the Silenced Pistol or Telekinesis to defeat the gnomes. The gnomes come in waves, with more in each wave. The gnomes can blast Nick with electricity if he gets too close. Points are counted based off gnomes killed. The game continues until Nick dies.