AMAZING GAME! Super fund with friends. Great pixel art, music, and solid gameplay! I think with some balance changes it would be even better.
My teamates and I couldn't beat the second boss ;_;
Interesting game and concept that unfortunately can't really be played due to the instant death / difficult movement on many of the stages. Making the levels larger and giving the player room to breath in the level design would have greatly helped the player experience! Still, great job and love the art style!
The pixelation is created by making the Camera render to a Texture, then down scaling it to the size of the Gameboy!
Other effects I did to make sure it looked like a Gameboy:
Hope that gives a good idea of what you can do to get these effects!
Thanks for playing and enjoying the game!!
For the level design, I took some influence from the Spelunky books:
https://bossfightbooks.com/products/spelunky-by-derek-yu
I didn't use too many techniques from his level generation, but it was a good reference for me!