Dracula isn't really awesome, it's like the SNES version without the mode7 and with more insane difficulty. ChoRenSha is a great looking single-level shmup, a fantastic tech demo but not a great long-term game. Nectaris is only slightly better than the PCE version, it's not remarkable in any way but its fantastic rarity.
Zugya is like many other fan-made games. Decent enough, I guess, i f you're into that.
The really good stuff is mostly all ports from other platforms. CyberCore, Fire Shark, Twin Cobra, Ys 1, Last Battalion, Marchen Maze, etc. The X68000 was the gamer's choice of the era, it had more and better ports and conversions than any other platform. As far as original content goes, there ain't much of interest.