What a great little Christmas surprise. I'm puzzled though, how did you get the stretched pixel effect in Pico-8? And the resolution? I thought Pico-8 only allowed 128x128, and 64x64 with a special POKE command.
Anyways, great game. I love the look and feel of a classic Atari game. Kind of reminds me of a Rankin/Bass Christmas film in video game form. Fun stuff!