A tiny factory. Every sprite is 5×5 pixels. Mine ore, automate everything, launch a rocket.
THE LOOP
Hand-mine: hold left-click on an ore patch to mine it yourself.
Craft (C): turn plates into gears, circuits, and machines by hand.
Automate: Miners dig ore and spit it forward. Belts carry items. Inserters move items between belts and machines. Furnaces and Miners burn coal as fuel.
Research (T): build Labs, feed them science packs, unlock better toys.
Win: research Rocketry, build a Silo, feed it 10 Rocket Parts, hit LAUNCH.