maybe this is old news, but i recently picked up "frogger hyper arcade edition". turns out it's got a castlevania skin! also contra, DDR, neon & some others, too! anyway, i thought it was pretty cool!
notice the axe knights, bats, skeletons, mermen, even alucard & the ferryman!
not sure what the goals at the end are, though...
for those who are interested, here's the contra & DDR skins, too
CONTRA
DDR
sadly no gradius or parodius skin, though
perhaps i could make one of my own, if were so inclined...