X
- X-Kalibur 2097
- X-Men
- X-Men 2: the Clone Wars
- X-Men: Mutant Apocalypse
- X-Zone
- Xardion
- Xeno Crisis (Genesis)
- Xexyz
- XIII
Y
- Yo! Noid!
- Yoshi's Cookie
- Yoshi's Safari
- Youkai Club
- Youkai Yashiki
- Ys - The Vanished Omens
- Ys II - the Final Chapter
- Ys III: Wanderer's from Ys (Famicom)
- Ys III: Wanderer's from Ys (SNES)
- Ys III: Wanderers from Ys (Genesis)
- Ys IV: Mask of the Sun
- Ys V: Lost Kefin, Kingdom of Sand
- Yume Penguin Monogatari
Z
- Zanac
- Zanac x Zanac
- Zen: Intergalactic Ninja