Control your yeti with the arrow keys (or WASD for southpaws): [left/right] to walk, [up] to jump, and [down] to slide. Hold the down arrow during a slide to accelerate. The sliding ability is the game's hook, and most levels are designed around it. Just tap the down arrow on an icy surface to begin the slide, and our yeti hero will careen down slopes and plow through threatening creatures unharmed. But be warned there is no jumping on the heads of your enemies here. Sliding is your only weapon, and it only works on ice. If you encounter a homicidal fox standing on snow, you're out of luck. Jump over him and never look back.
The penguins serve as the omnipresent collectible in Snow Drift, like Mario's coins or Sonic's rings, but rather than collecting them, the yeti callously knocks them aside like peeping ten-pins. This simple dynamic says as much about his character as his self-satisfied expression or his adorable toddling walk animation. He's a casual bully out for a good time, barely noticing the victims of his freewheeling rampage. Bravo for anti-heroes.