==== Target ====
A set of filters implementable in code. See also https://byuu.net/video/color-emulation for tips on keeping the color accurate (possibly a version w/o the gamma curve applied so it can be added as a separate step).
=== Atari 2600 ===
Need to add not only info about homebrew development, but to copy the already-huge list of homebrew Atari carts.
=== NES ===
The NES, due to its high nostalgia and popularity factor, has tons of homebrew developed for it. Some people have even used [http://www.dustmop.io/blog/2019/09/10/what-remains-technical-breakdown/ variants of Lisp to build games].