Epyc Wyn said:
Should games even have just one genre.
Yes, but not all. A number of genres get mixed with others to make 'better' games, whilst many would just enjoy the focus on just one of the genres.
Should they have several different genres to keep things diverse or just have a single focus for there game's genre to keep things simple.
Both. Some should have mixes, some should be pure. Too much of anything is bad. Several genres doesn't make things diverse, nor does one genre keep things simple. Diversity is having a mix of both single genre games and hybrid genre games.
I suppose there's always the possibility for a whole new genre entirely.
That too would be good.
These days we need more diversity. That ain't going to come from constantly mixing genres together, as usually companies will follow the mixed genres that others used successfully and you get samey games. Instead, we need non-mixed games to come more to the forefront, and different styles of mixed genres to be tried.
Sadly, I'm running out of uses for genres. These days they get so muddled up with everything they include, but will carry the title of the genre that is the favourite of the demographic they wish to sell to. There are still a few distinct genres, but they are so broad as to be useless. Try to get people to agree on what an RPG is for example (DO NOT START THAT CRAP HERE OK?).