Man, I love this game. It was one of my favorite games to play when I was a child. Recently, I revisited it and it was as good as I remembered it to be, if not better. I remember installing this game on my grandma's phone back then and accidentally charging her a dollar (13k rupiahs), LMFAO!
I'm going to talk about level S-10 in this post. This level was really fun to play. It's the second sandbox level in the El Porkado episode, and it mainly involves sliding on ice. Most of the vehicles you make here should be 1-block tall, since the gaps you have to fit through are really small. There are 20 stars you have to collect, with some of them being harder than the others. The main gimmick of this map are buttons that you have to power in order to toggle the hinges.
Some things were kinda annoying to do since the physics were somewhat inconsistent. You could break your vehicle despite doing everything correctly, or you could get stuck on the ice despite using the same vehicle. Nevertheless, it was still a blast to collect all the stars. This was definitely one of the harder sandboxes to complete, but it's definitely not the hardest due to the abundance of items you get.