Looking for some fun lower end pc games?

I like stuff where it's an open world and you have some choices. Games I have: grand theft auto San Andreas / 3 / vice city, minecraft, infestation survivor stories, the dead linger, south park stick of truth, oblivion, and project zomboid. They don't have to be but I'd much rather have a game with looting, zombies, apocalypse, or barricading. Maybe a bit of realism like hunger coldness etc. And do please have it be open world. Thanks. Also, they don't need to be TOO low end, but they can be. I don't mind bad graphics or good graphics.

Minecraft.jar is corrupted?

Whenever I try to run the minecraft.jar in my.minecraft folder I get the message:

"Error: Invalid or corrupt jarfile
C:\Users\COMP\AppData\Roaming\.minecraft\minecraft.jar"

As a result, I can't use any other shortcut to play the game. I've tried everything I can think of… Deleting the.minecraft folder, system restore, finding backups of all of my files on my harddrive before I had this issue, but nothing is working.

I believe this happened because in an attempt to update my java, I simply deleted the Java folder from my Program Files. But, even having replaced the files with my backups, Minecraft refuses to work. If I delete the files, it does not reinstall itself or make new files, it simply keeps giving me the same error message.

I'm working on Windows 8.1, 8gb ram, HP Envy 6.

Are these graphics cards good for next year's gaming?

Nvidia gtx 750 ti and non ti/gtx 760 ti and non ti/ 770 ti and non ti? (with 2 gb)
Radeon r9 270x/270
radeon 280x/280
NVidia gtx 650 ti/660/

I'm planning to build a pc next year the games that I want to play on these graphics cards when I build my computer is minecraft and titanfall and also the newer next year's games… I don't mind playing on medium or low settings on the next year's newer games…

Added (1). How about the other cards?

What laptop should i buy? - 2

Alright I would like a decent WINDOWS gaming laptop (not great because I'm not a gamer I just play fallout and minecraft) my budget is $1350 but I would like it cheaper but if it's $1350 that's alright. I'm not stupid when it comes to Windows computers so I know not to buy an alien wear or razor blade(because you're buying the brand) but can someone find me a sick laptop thanks

What do you think of my youtube username?

Branflake4craft is the username I'm thinking about is that a good choice for a gaining channel not solely dedicated to Minecraft game play videos but more towards gaming in general?