First thing that I wanted to do is a bridge. I really like to do my sketches rather in 3d then by drawing because over the 17 years in that field I really feel fluent in modeling directly from my head and experimenting with shapes and trying different approaches. Also 3DS Max, as my weapon of choice, is offering a lot of handy tools for easy experimenting with different shapes. I couldn't  survive without FFD modifiers and Shift tools in Graphite modeling tools. Below are the four candidates for the bridge that I managed to save for presentation during the creative process.

Once I decided on bridge, stairs were simple to design. I always liked  amorphic shapes and that tendency of mine just popped out here as well. I still haven't decide if I am going to do ZBrush sculpting or leave the low poly models and jump to painting textures. That decision is for later, when I create rest of the assets.

This is a sketch for simple level inspired by handheld Legend of Zelda games. Assets are simple placeholders that will be replaced by actual models as I progress. plan is to have a ground level and a simple dungeon below.
To be honest. I think thaht I will keep this version as well and just add textures onto models and crate a voxel version as well.