When Bitcoin had the same market cap as Monero has now, it was perceived as a new, interesting technology by some, and the price rose by more than 100x in less than a year.

More is surely possible (see Quark or AUR for examples of dud coins that still managed nice rises).

Crypto Kingdom might go viral. Most interested players have invested $1,000 or more in their first month of play. All the currency is held up in XMR in the game cold accounts, unavailable for the market.

Something unforeseen could happen as well.