10) Lightning Returns: Final Fantasy XIII
When Final Fantasy X received a direct sequel, it was dubbed Final Fantasy X-2. Then when Final Fantasy XIII received the same treatment, that sequel followed suit properly with the title Final Fantasy XIII-2. It’s a mystery, then, why the third entry in the FFXIII saga was called Lightning Returns: Final Fantasy XIII instead of the much more obvious, much more sensible Final Fantasy XIII-3.
If Square Enix really wanted to include Lightning Returns in the title, they could have easily made it the subtext, a là Final Fantasy XIII-3: Lightning Returns. Alas, this may be one of the less bizarre titles within the franchise, but it still doesn’t make much sense.