Snake Re-imagined And Taken To The 3rd Dimension!4.01 / 5.00 7,908 Views
Be a badass and go on an epic kung fu quest!3.88 / 5.00 7,459 Views
Learn puppet reptile's best ABCs in this physics-driven interactive storybook3.89 / 5.00 7,188 Views
get an atari and rig it :)
but for software, you can basically use anything and just tailor your synths to sound like that.
or you can downsample what you use. try the VST, bitcrusher. its decent for that, but don't use it to 8-bit-ify normal songs. because it wont sound 8-bit. it might sound cool anyway, though lol
try Milky Tracker, never used it myself but friends have and they say it's good, it's free too i think.
Gonna second FamiTracker and MilkyTracker. If you've got a game boy and a flash cart you should try LSDJ and Nanoloop too.
p.s. i am gay