Thank you for trying it out and providing feedback.
The original game had a more semi realistic lighting so I decided to go for a retro style.
As for the scaling, I could have included a little tutorial on how to do it properly (something I'm going to include in the next update).
The pick range isn't unlimited, it's just high enough that it seems like its unlimited (had to save performance)
And as for the confusion whether or not an object is pickable, I can include an object highlight on hover mechanic (currently only the crosshair expands a bit and turns solid white).
Again, thank you for the feedback, it helps me rectify the oversights made.
I wish you all the best!