The Masamune by ellywu2 from the "Chrono Symphonic" album. An awesome mix of "Frog's' Theme," it really gives you the feeling that you gotta earn that sword of awesome power. A shame it's not up on the main site.
''Fight for Our Future" (Battle 1) is freakin' awesome, and cranks the awesome from the original (stream/download).
Star Salzman's "The Incredible Singing Robot" (stream/download takes "Robo's Theme" and turns it into an Image Song. And it is great!
Star Salzman also made the rather awesome and badass remix of "Battle with Magus" called "Black Wind Rising"—it begins with slow orchestral, but then after an amazing "Duel of the Fates" build-up (complete with ominous choir) the acoustics cut in and...wow. (stream/download).
Lots of people love the "Corridors of Time" theme, so it only makes sense that it'd be remixed. Two particular mixes of note are "Corrupter of Time" (stream/download) by Joren de Bruin & Tweek, and "Time Warp Mix" (stream/download) by The Vagrance. The first being a hard rock mix, the second being pure DnB. Both are easy to get lost in and are great tunes. Check 'em out.
From Chrono Symphonic, courtesy of DarkeSword, "Blue Skies Over Guardia", the almost literally uplifting remix of "Guardia Millennial Fair". It takes what was originally a cute, folksy tune and turns it into something hopeful, epic, and awe-inspiring. (stream/download)
"Kingdom Trial" is morphed by Zircon into a five-minute piece which, in the words of both OCR's judges and some of its commenters, is a Danny Elfman-esque, creepily demonic tune with shades of Kefka's theme from FFVI that also brings to mind the Guardia soldiers chasing Crono and company through the castle a la Scooby-Doo. "Calamitous Judgment" (stream/download).
There's also the rocked out version by Sixto Sounds and zircon, "Lunatic Moon" (stream/download).
The award for "most completely different in mood, instrumentation, and presentation" remix has to go to "Nanaki Searches for Truth" by Dev—taken from "It's Difficult to Stand on Both Feet, Isn't It?". That's right, the silly, twangy song which plays when the party is in disguise on the boat from Junon to Costa del Sol...only here it has become a deep, powerful, Lonely Piano Piece with heartbreaking strings that is at once haunting, wistful, pensive, depressing, and solemn. Despite its source it seems to make a wonderful encapsulation of Red XIII's relationship with his father. (stream/download)
A brilliant remix by Darangen, "Finally Home," takes the "Temple of Chaos" music from Final Fantasy and turns it into, of all things, credits music. And it works really well, actually (stream/download).
Darangen had made a mix of the same song a year before hand known as "Warriors of Light," which is just as awesome. It turns the song into a trumphant battle type of background. Perhaps not better, but definitely still awesome (stream/download).
Newcomer katethegreat19 made an excellent first impression with her lyrical version of FFIX's "Rose of May." Note that all the vocals and the harp, guitar, drum, and recorder are all done by her. (stream/download).
"Messenger in the Key of Black," a remix of Final Fantasy IX's Dark Messenger. Nex and lightwarmth managed to turn the theme into a grand piano piece that still manages to fit Kuja to a tee (stream/download).
"The Dark World (Crystal Abyss Mix)" by Ubik takes the Very Definitely Final Dungeon theme from Final Fantasy III and turns it from a march of hope and readiness to fight into a creepy and yet interesting tune. Almost like saying, "Okay, we're on our way to fight the Cloud of Darkness! We gotta save both worlds! ...Good god I hope she doesn't murder us." (stream/download).
"The Crossroads" by Jovette Rivera is an epic J-Pop/Hard Rock remix of "Cid's Theme" from Final Fantasy VII (stream/download).
Also from Final Fantasy VII, this fantastic remix called "Hydrophone Breakdown" by JigginJonT. It's a song which changes directly from strong rhythmic sections to soft melodies and vice versa, while having an absolutely beautiful tune, somewhat like the ones from The Wingless (stream/download).
From the FFVII Voices of the Lifestream album, "Beginning of the End". A remix bLiNd made of the already kickass song "Birth of a God." Seriously, OverClocked, get this stuff up on your main site!
"Eminense Grise" (stream/download), a vocal mix of "Another Moon" with sinister overtones and a haunting mood, is followed by "Genesis of Destruction", turning the Zeromus battle music into a rock opera of kickassery. It even got a second version with Phantom of the Zeromus. Echoes of Betrayal, Light of Redemption, folks.
In addition to the Finale, there's also "Evoking the Dawn" (stream/download), a beautiful piano arrangement of the Prelude and Rydia's theme. Then on the opposite side of the spectrum is "Treason" (stream/download), which takes the Four Fiends battle music and turns it into a thrasher-metal masterpiece.
The two remixes of "Terra's Theme" from Final Fantasy VI are the explosive heavy metal "Terra in Black" (by Ailsean) (stream/download) and the quiet, somber piano piece "Death on the Snowfield" (by AmIEviL) (stream/download).
Another brilliant mixer, DarkeSword, decided the Legendary Hero theme from Wind Waker was not good enough. So he did his own version called "Ancient Hero" (stream/download).
Though his name is comparatively mundane, Tyler Heath took the minimal ocarina tunes "Bolero of Fire," "Requiem of Spirit" and "The Song of Storms" (or "Windmill Hut") from Ocarina of Time and created the incredible "A Storm in the Desert" (stream/download).
Another Zelda track: "Pachelbel's Ganon" by djpretzel, a heavy, yet soothing reimagining of Zelda's Lullaby.
Darengan's "Falling Back" (stream/download). The Gerudo Valley theme is a perennial favorite for remixing, and by adding a message to the awesome guitar riffs the song can only be improved.
Thunderstruck. A remix of the Song of Storms from Big Giant Circles and some1namedjeff for the 25YearLegend Indie Tribute album, the song incorporates environmental sounds and pure instrumental madness, sweeping through the iconic ocarina tune, with some manic solo segments and just general awesomeness. There's a reason this is the remix track that has the most views on their Youtube account. (stream/download).
Mega Man remixes
"Nuclear Flash" by Sixto Sounds and zircon. Thought Flash Man's theme from Mega Man 2 wasn't intense enough? Here's your solution (stream/download).
AkumajoBelmont's "For You" has to be one of the most unique takes on "Wily Stage 1" from Mega Man 2.
"Blue Lightning", another remix by Disco Dan! This turns the "Title" theme of Mega Man 3 into a slower paced and yet still totally awesome version of itself. (stream/download).
And while we're talking about the Title theme of Mega Man 3, "The Passing of the Blue Crown" also manages to be one freaking awesome remix of the theme. (stream/download).
Trenthian's "Bombin' Shade of Blue" takes Shademan's music from Mega Man 7 and makes it swing (stream/ download).
Sir Jordanius's first remix, "Smooth as Honey", starts out as a muffled remix of Hornet Man's theme in Mega Man 9. Then the funk kicks in.
"Stranger in the Desert" (stream/download), another piece by DarkeSword. This one takes the "Departure" and "For Endless Fight II" songs from Mega Man Zero 2 and puts 'em together into a dramatic piece. Very fitting for Zero.
bLiNd in general is fantastic, but his trance remix of the green Brinstar music from Super Metroid, "Jade Catacombs", is very well done (stream / download).
The Wingless's "One Girl in All the World," a fantastic take on the "Red Brinstar" music from Super Metroid. (stream/download).
"All the World in One Girl," also by The Wingless, is the jazzed-up counterpart to the above. Yes, it's the credits music for Haloid (stream/download).
zircon and pixietricks are two ReMixers to know. See how they handle Metroid's Maridia music in "Kindred" (stream/download).
From the same album (Reserve Tank - VARIAtions), there's also "In Your Prime," a great mix of the Brinstar music by Big Giant Circles (stream/download).
Children of the Monkey Machine make creepy, atmospheric music. For example, "Drowned in Exile," his take on Super Metroid's already ominous Maridia 2 music (stream/download).
The Heroes vs. Villains album features "The Bounty of a Brain" (stream/download), which is four minutes of pure awesome.
Sonic the Hedgehog remixes
DarkeSword is awesome, Sixto Sounds is awesome, so what do you get when you put 'em together? A high octane remix of course! This being the case for "Metamorphic Rock". A sweet remix of "Green Hill Zone," "Marble Zone," and "Final Zone" from Sonic the Hedgehog.
On the side of Sonic 2 ReMixes there's "Trippin' on Ecstacy" by PxFury. Making the Robotnik Battle theme sound really... trippy (stream/download).
"The Doomsday" by SnappleMan, Ashane, and norg (as seen on the Sonic 3 album Project Chaos) freaking rocks and makes the Doomsday Zone theme from Sonic 3 & Knuckles even more awesome. A very big shame it's not on the main site (stream/download).
"Knuckleduster" gives the Marble Garden Zone theme a nice set of lyrics (stream/download).
Another excellent, energetic remix of the same track: ParagonX9's "The Alternate Route" (stream/download).
Another track from The Wingless is the beautifully soothing "Pearl Song" (stream/download), which a remix of the "Dire, Dire Docks" music from Super Mario 64 (an already-amazing song in its own right).
Super Mario RPG: "Mushroom Way Madness" by Orkybash, a very jaunty variant on the Mushroom Way and Rose Way themes, and "Leafcutter", a reimagining of the Weapons Factory theme courtesy of radiowar, which takes the original and makes it considerably darker and more eerie.
"The Souls of Chaos" by RoeTaKa, a remix of (mostly) the already great song "A Way to Nowhere" from Chaos Legion that stays true to the style of the song. It almost sounds like it's originally from the game itself (stream/download).
Think Guilty Gear music is awesome? ...Well it still is. But "Destroy Movements" by CHIPP Damage and James George is a haunting and subtle remix of "Writhe in Pain (Millia Rage's' Theme)", and it works nicely. May not rock, but that doesn't mean it's still not awesome (stream/download).
There's also "Alpha Blade," the trance remix of "Suck a Sage (Chipp Zanuff's Theme)" by Beatdrop (stream/download).
"The Ken Song," by jdproject. The lyrics may be a bit tongue-in-cheek, but the guitar is excellent, the vocals are solid, and the tune catchy. Realize your Ken! (stream/download).
That's not the only awesome Ken remix. One of the mixes on the Super Street Fighter II Turbo HD Remix album by AE and prozax called "Clamato Fever" is totally awesome and rockin'. The kicker? It's the menu theme (stream/download).
Mazedude's "River City Rammstein" (stream/download). One of the better techno themes. Its heavy beat and fast pace makes it a perfect soundtrack for any fight or beatdown. The title, however, is a bit of misleading; it doesn't really sound like Rammstein.
"New Mexican Thunderbirdstream. An awesome spaghetti western remix of T. Hawk's theme from Super Street Fighter II. Especially epic is the tribal chanting towards the end.
Remixes from platformers
Vigilante's "Beneath the Surface" (stream/download), from the fantastic Kong in Concert project. A mesmerizing remix of the underwater music from Donkey Kong Country.
Speaking of Kong in Concert, SnappleMan made an awesome remix of "Gang-Plank Galleon" called "Thrash the Plank" (stream/download), adding rocking instruments to the already awesome song.
Anyone into heavy metal will want to check out goat's contributions. "The Raven," his remix of Castlevania's "Wicked Child," is a good place to start (stream/download).
"Malevolent Mansion" is a kickass drums-and-bass remix of "Mad Monster Mansion" from Banjo-Kazooie. Crunchy guitar riffs mixed with bombastic synthesizer and percussion work, and by the time the nostalgia-inducing xylophone kicks in, you'll be grinning from ear to ear. Even Grant Kirkhope, the guy who composed the soundtrack for the original game called it "bloody marvelous!" (stream/download)
PrototypeRaptor has several decidedly awesome remixes on the site, but one in particular is "Dark Matter" (stream/download), a remix of the Miracle Matter fight in Kirby 64.
"Endings, Beginnings, and One Hell of a Trip" (stream/download) is an awesome remix of of the already awesome song "Endings and Beginnings" from Breath of Fire IV by Another Soundscape. To quote djpretzel:
This is excellent, epic synth work, chock full of synth bass, synth pads, and more hot synth lead action than you can shake a stick at. And yet, even with some magnificent solo sequencing arrangement, what takes the mix up a notch is the addition of the dulcimer, which might seem out of place in a largely electronic setting, but which Mattias blends in perfectly against gated percussive and synth fx.
Likewise, the mix by Gman of "Dance" from Breath of Fire II called "You Must Dance" (stream/download) turns the song into a crazy type of trance with some great synth in it. Definitely a song you could dance to.
"That's What You Get," a mix of "Graceful Assassin" from Kingdom Hearts: Chain of Memories, enough said. The only thing making this mix awesomer is that it was made by DrumUltimA and MomUltimA. That's right, a mother and son remixed this together (stream/download).
zircon made a spectacular mix of "Image of Hero" from Phantasy Star Online called "Ragol Weather" which honestly does a wonderful job at sounding like the Weather Channel would play it in the background (stream/download).
CarboHydroM and LuIzA's fantastic remix of Tales of Symphonia's "Fatalize" into "Strike of the Devil's Axes". Takes an already epic piece and adds absolutely face-melting guitar to it, making the piece unbelievably epic (stream/download).
The Unholy Wars is a remix of the already awesome "Fighting of the Spirit" from Tales of Phantasia by Dhsu and Sixto Sounds, which also adds in face-melting instruments after a beautiful piano intro.
PriZm's' mix of "Take Up the Cross" called "Simplified Design". While not face melting like the above two, the song is still totally rockin' and awesome.
"Go the Distance" is another rocking remix from Sixto Sounds. This time of "I'll go" from Dawn of the New World/Knight of Ratatosk (stream/download).
One of the remixers working on The Missingno. Tracks, ProtoDome, came out with an extremely catchy medley of Pokémon Crystal, and sprinkles of nostalgia here and there (stream/download).
Big Giant Circles, Sole Signal and Tweek, three artists already mentioned on this page, decided to team up to do a Jade Empire remix known as "Global Empire" (stream/download). A very... interesting, to say the least, remix of "Fury, Hammer, and Tongs" and "Techno Tune (World 2)".
Wild ARMs has had its share of kickass remixes as well. For example, take "Dové L'Amore" (stream/download) by Jovette Rivera, remixing "Courage" with some nice Spanish lyrics, turning it into a sort of love song. Also try on "A Ring and a Promise" (stream/download) by Ashleigh James and bLiNd, giving "Prologue 2" song nice vocals as well, giving it a sort of hopeful feel.
"Dueling Consoles" (stream/download) by Shnabubula is a remix of Secret of Mana's boss theme with a Console Wars twist. An NES and a Sega Genesis start competing with each-other in the arena of chiptune music. It starts with the two sources alternating, then playing at the same time, with both sides trying to gain dominance. And then, at 2:00 in, the two sounds fuse together into a rendition of Danger way more awesome than either one could be alone. 8-bit music has never been so metal.
"Dragon Song" (stream/download) by Harmony is a fantastic piece from Secret of Mana for much the same reasons as "Pillar of Salt" mentioned earlier, though they're in entirely different styles; a stunning piece with an interesting blend of instrumentation topped by excellent vocals. It's so fantastic, in fact, that every time Harmony comes to one of the various site meetups, this song ends up gettingplayedacoustically at some point just because.
The magnificient but under-appreciated Soukaigi soundtrack currently has only one remix, "Aftershock" (stream/download) and it is an experience of the central them. Honestly hard to describe as other than superlatively well-thought out.
"Brainshock" by aluminium (based on "Tessie!" from EarthBound) has a very enjoyable dreamlike feel to it. To quote one of the song's comments, it makes you feel "entertainingly dizzy".
The Halo theme: big, orchestral sized thing with all kinds of instruments. Well, now it's also a Celtic style song by the name of Mahabharath Highlands, and it is pure awesome. Give it a listen: (download/stream)
Bladiator and The Orichalcon team up to give us "Clairvoyant Elegy," a not quite funk, not quite pop, but definitely awesome remix from Final Doom (stream/download).
Strike did a great job at remixing the intense Credits music from Perfect Dark, turning it into an almost other form of awesome: "Deploy"! (stream/download)
"Foregone Rejuvenation" stream. An excellently done remix of what is probably the most popular piece of the original Unreal Tournament game's soundtrack, replacing the original version's drum 'n bass with something much more... spacey-er.
Remixes from visual novels
From the Radical Dreamers album Thieves of Fate, with have "Confronto Finale" by Tweek, a great remix of the "Final Confrontation" music of the game. This mix transforms the song into an epic music battle between Trance, Orchestral, and DnB, while still keeping a haunting and awesome feel (stream/download).
From the same album, Summer's Dream is a low key percussive affair gently wandering through the epilogue music with a very labyrinthine quality to it. Not on the album, but rather part of a slew of "Far Promise ~ Dream Shore" remixes for Radical Dreamers is Roggah's "Older Promises" (stream/download). This one will leave amateur pianists in lament for the lack of sheet music, it is just so staggeringly poignant.
Try a Ace Attorney mix on for size. Done by PrototypeRaptor, "Cross-Examination (Sudden Interjection)" (stream/download) is remix of the Objection Theme. Any fan of the series knows that it is practically a law for any version of the song to be awesome.
"Holiday with Mia Fey" (stream). A pretty good remix of the Turnabout Sisters theme from the first Ace Attorney game. Got some nice synth improv solos too.
There's also OA's "This Feeling" (stream). It's a truly stunning and electric remix that only gets better with the addition of an electric guitar partway through.
Celestial Winds from The East is a laidback, Shamisen-based rendition of Ōkami's"Reset"~Thank You Version, already a beautiful song on its own. The Ska-like beat combined with the Oriental instruments make for a great cover, while keeping the original's beauty intact.