Fun, buy I got 1.0e18 spent a ton of upgrades focusing on speed holes, water bottles, mre, tents, sooking pot, and expanding the back.
I had a massive bag with mostly speed holes and only had room for a sock. That sock got multiplied to oblivion and sounded like it made the game lag. I left the game run as I type this and it's still not done last I checked. Safe to say I got a really high score lol. Fun idea, but it tends to get scores to oblivion fast it seems. I like the random upgrades though makes it fun for multiple playthroughs.