The NES version almost made me throw the controller through the TV, especially since when you actually manage to defeat Beelzebulb, you'll only find out that you have to play the game again in even tougher levels to actually finish the game... xD
Castlevania 1 was hard as well, but I find Castlevania 2: Simon's Quest even harder, since the off-screen projectiles really give you a hard time
And that reminds me of the original Ninja Gaiden trilogy, gods that was hard as hell too xD
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
