I love X-PirateZ so much.

I love the item sprites, I love the music, I love the character sprites, I love the sound effects, I love the bootypedia, I love the rules that bind them together into a game. One second you're listening to music from Astrorock and the next you're blasting your enemies with Doom plasmagun to the tone of Deus Ex death screams. The next day you're discovering more Fate/Stay Night characters in the plot while listening to a remix of legendary F777 newgrounds music. And somehow it all fits together.
X-PirateZ takes so much of the good stuff from gaming and internet culture from the past decades and merges them into something greater than the sum of its parts. Despite all the references and content borrowed from everywhere, its got its own engaging lore.

I wish there were more games like this. Not afraid of copyright trolls, just tapping into all the great stuff to create more goodness.