I love the concept, but it's so tedious in practice. It takes absolutely forever to get across the street, the movement speed is glacial and the difficulty is insane, and for all that you only get three crates worth of items. Taking the radio helps, but the first time I played it disappeared from the game, and the second time it didn't work consistently enough to keep me from being wiped out. It seems like you can only restock once per day, so I'm not sure the game is winnable even if you play perfectly.
The look, feel, and overall presentation is spot on for SBIG Jam, though. The sound effects deserve a special shoutout. And having a picker for jam/post-jam version is pretty cool.