What could I make a game series of on Youtube?

Hai, so my Youtube channel is primarily Minecraft, and I occasionally play some online games, but I'm looking for something I could make an ongoing series of that differs, here are my laptop specs:
Processor: Intel(R) Pentium(R) CPU 967 @ 1.30GHz
RAM: 4GB (3.8 available)
64-bit operating system

I have tried League of Legends, but it doesn't even load.
I want to stay away from Happy Wheels (Played it, don't like it) and I don't want monthly paid subscriptions as I won't be able to upkeep the pay.
I don't mind if I need to download the game or not, but it needs to be something interesting, thanks!

*NOTE*
I can't record Xbox, only laptop, thanks all the same c:
Here is my channel for those who want to take a look: http://www.youtube.com/...BloodTears

Fallobt

I would recommend team fortress, Grand Theft Auto, Portal, or maybe even Limbo.

james

If you are afraid of lag, get FTL. It costs some money ($10) on steam but well worth it.
Left for dead 2 is free now
If you don't mind scary games then do a reaction of slender (to give variety)
Diablo 2 is very good, and you can get friends to lan party with you.
DayZ standalone is fairly new so a lets play will be a fresh thing on YouTube for a while.

Here is a DayZ intro already made. Suggested background music, the walking dead theme.

Glenster