If the game does not have a wikia page, does that mean it will never get accepted?

Submit ¤any¤ web page giving more information about the game. I used the Steam page for one game that I submitted. Even if it's an older/obscure console game, there's bound to be ¤some¤ information on the internet about it.

As long as you link information on the game and it can be considered valid for a rough idea of what the game is it will help. Some games never get a Wiki page because someone needs to write one and get it verified.