I so totally love setting riffs, I just had to add some more. Midichlorian Outbreak is a cyberpunk-ish take on Star Wars (started, I just noticed, by The Fat Hero--how could you not mention it?) where midichlorians are actually a virus. A small percentage of people who contract the disease survive and end up with Force powers... it's pretty cool. Exalted: the Echoes is a riff that attempts to take the myths of Exalted and create a nWoD game with them, much in the same way vampire and werewolf and wizard myths were the basis of the other games. Note: this is NOT Exalted in the modern world, it's thoroughly a nWoD game, with Exalted as it's inspiration. Towards the end of the thread, I point out how well this works with the Dark Hero archetype from Mirrors...Finally, Exalted: 1,000,000 BC is a "naturalistic" take on Exalted, that supposes Exalted as the prehistory of our earth. It's... a little hard to explain, but I guess if one were to compare it to original Exalted, it'd be like comparing Science Fiction to "scifi," does that make sense?