- X-Men: Destiny (Wii)
- X-Morph: Defense (Switch eShop)
- X-Scape (DSiWare)
- Xavier (Wii U eShop)
- Xenoblade Chronicles (Wii)
- Xenoblade Chronicles 2 (Switch)
- Xenoblade Chronicles 2: Torna - The Golden Country (Switch)
- Xenoblade Chronicles 3D (New 3DS)
- Xenoblade Chronicles X (Wii U)
- Xenon Racer (Switch)
- Xenon Valkyrie+ (Switch eShop)
- Xenoraid (Switch eShop)
- Xeodrifter (3DS eShop)
- Xeodrifter (Wii U eShop)
- Xeodrifter (Switch eShop)
- Xevious (NES)
- XG Blast (DS)
- Xiaolin Showdown (DS)
- XIII (GCN)
- Xmas Puzzle (WiiWare)
- Xtreme Sports (GBC)
- XType Plus (Wii U eShop)