Two game puzzle ideas.

These two drawings sort of started off the whole tiny house drawing thing, as they were meant to be rough ideas for game puzzles in a black-and-white,  western frontier victorian era etching style videogame I was hoping to make. I never got my reference books in from amazon, so I started drawing some. Here's two rough studies.
Here's a steam-driven two-stage stamp mill. 

This is a totally, totally realistic,working, uh, aircooled, single-piston OHC engine - I didn't draw the timing sprocket and chain on the other side of the head. So, you know, that TOTALLY makes it unrealistic. Standing in an inexplicable cone of dark light, there is a little figure in the lower left hand side to give you a sense of scale. Directly above him in the upper left is the control center for the engine.