Congratulations on reading 100 subs!
I'll admit, my channel isn't about gaming and I myself am not an avid gamer, but just off the top of my head:
- Do a challenge video. Play part of a game under some kind of constraint, such as after eating a hot chilli or drunk.
- Do your favourite vintage game of all time (it looks like you play new games)
- Introduce yourself to your 100 subscribers! Tell us who you are, a little of your history, some of what you believe in!
I hope that helps? Whatever you end up doing, have fun and good luck!