Put simply, we need To have little people. for one thing, theres all those Buildings, houses, and skyscrapers, which can get a little boring on their own.
All they would have to be is little walking Stick figures, maybe about 10-15 pixels tall.
They would at first, just walk around randomly, Be able to go up and down angled surfaces, like stairs.
However, if the "see" a sudden pressure increase anywhere, they would run. They could get blown around, Lit on fire, drowned, etc. sorta like those little guys on that dan ball game.

What does SKTM stand for?

And another idea, A character that can be controlled with arrow keys or WASD.

Sweet! Be sure to let me know when its ready.

Alright, sounds good.