Robotnik Winter Zone is the fourth level of Sonic Triple Trouble for the Sega Game Gear. As with other stages in this game, Robotnik Winter consists of two standard Acts followed by a shorter, third Act which contains the Zone's boss. The level comes after Meta Junglira Zone and precedes Tidal Plant Zone.
Robotnik Winter is, predictably, cold. Snow blankets the ground, to such an extent in fact that snowboarding becomes an extremely quick way of blasting through the level. Drifts occasionally conceal dark pits into the network of caves that course through the permafrosted ground. Breakable ice walls and powerful updrafts enable Sonic or Tails to proceed back above ground.
From the name of the Zone, we can presume that Eggman's mad science is in some way responsible for the chilly climate. His badniks deployed in the region include Penguin Bombers and Spidal Taps. Spidal Taps are spider robots that are on the platforms of the level; destroy them to use the platforms. The boss is the oddly named Giga Thomas "Pen". Interestingly, the Zone's Japanese name is also "Robotnik Winter"; this was before "Robotnik" was acknowledged as Eggman's surname in Japan.