jkbyc

"In this GDC 2016 talk, Terrible Toybox's Mark Ferrari discusses and demonstrate some of his techniques for drawing 8 bit game graphics, including his celebrated methods for use of color cycling and pallet shifting to create complex and realistic background animation effects without frame-animation

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And an interesting comment of someone on FB:

Hydra

Hydra have a diffuse neural system

But no brain to speak of

A simple creature echoing older, more primitive forms

They doze off, so we've found

Using familiar chemistry

To slumber every four hours

When I sleep I descend like a bathysphere Down through layers of earlier incarnations

Dipping below the surface

Leaving the airy light of consciousness behind

To enter the involuntary dream world of Freud and Jung

Deeper still then dreams themselves disperse

Slipping away like darting fish

Leaving me reptilian, autonomic, just breath and pulse

But there's further to go - into the abyssal dark

To reach my fundamental hardware

Where I am the hydra

https://www.facebook.com/QuantaNews/posts/1789738887890362