HexxBit

Every block is a tiny semiconductor crystal. There are no logic blocks: diodes, transistors, gates, a latch that remembers, and a clock that ticks all come out of three rules about how electrons (blue) and holes (red) move.

Try: walk up to the bench, press Tab until you have the switch tool, and click the red vdd and blue gnd blocks to change the circuits' inputs. Hold R to speed up time and watch the ring oscillator tick on its own.

Controls: WASD move, Space jump, F fly, mouse look. Left/right click use the tool, Tab changes tool, 1–7 or the wheel picks a material. Hold R for 5x speed, P pauses. F1 help, F2 crystal view, F3 stats, F4 carrier colours.

Made with LÖVE and LuaJIT. feedback wanted.