Alucard's animation looks perfect, and the backgrounds are also a very, very close match to the PlayStation originals – which is pretty darn impressive when you consider the gulf in power that exists between the two.
Even the audio is decent; sure, the music isn't quite as good as it is in the original game, but Pigsy has done an excellent job of converting the CD-quality soundtrack to the Mega Drive's humble Yamaha YM2612 sound chip.
Before you get too excited, Pigsy has previously stated that this won't be a like-for-like conversion of the 1997 original but rather a level-by-level experience more akin to the old-school Castlevania titles. However, it will combine elements from the PlayStation version and the Japan-only Sega Saturn port – so you'll get to play as Maria.
Symphony of the Night was in the news recently thanks to the appearance of a prototype version of the Game.com port of the game, which later sold on eBay for a whopping US $7,600.00.
If you like what Pigsy is doing, then you can support him via his Patreon.