Just buy every game that exists on Wii U (including the bad ones) and that should keep you busy for a while...if you don't kill yourself while playing Barbie Dreamhouse Party.

On a more serious note, I think a $800 PC should be enough to start with, you don't need a super mega ultra super PC from the get go. A $800 PC should be enough to be able to play most games on high settings...however, if max settings is a big deal for you, then $800 won't be enough.

First, Which PC do you have? post with detail(CPU, Motherboard, RAM, Power Supply mostly)
Second, Which is your monitor?
Third, What 3rd party games you wanna play?
Last, What PC or 4Bone exclusive are you interested in?

I think $800 is the max I would pay for it to be honest. If it's enough to play with high settings most next gen games then I'm good!

My PC specs are too sad to post...

My monitor is good no problem with that!

Whatever comes to PC! I also like indie games quite a lot!

I only care about Nintendo exclusives to be honest so Wii U and PC would be fine.

Well it heavily depends on how big of a jump developers are willing to take. I mean Titanfall for example has some very low recommended requirements, so a $800 PC should be able to play that game even on max settings. However a $800 PC will have some problems with The Witcher 3 on max settings or even high, although that game looks so good that even medium settings would be better than Titanfall max settings. 

Keep in mind that games like The Witcher 3 are exceptions (they were last gen at least), not all games require a godlike PC to be able to play on max settings.

Ok, no matter how sad you PC is, you "could" upgrade or reuse some parts(case, hard drive, disk drive, Power supply, mouse, keyboard to name a few) and leave some bucks for better "performing" parts(CPU, RAM and GPU are you PC's Muscle) so specs are important no matter how old(to some point lol) because you can reuse some of those parts.

Your monitor is 1080p 60hz?

Where are you going to buy the PC parts? Newegg? Amazon? Ebay?

On a side note. PC hardware has been kinda lame these last 2 years. New CPUs are just 10% faster than 2011 ones and are selling for the same price. GPUs have been the same models(with a few very expensive new products) form 2012 and just a little bit cheaper(except for AMD recently cause litecoin miners) so its not the best time to invest heavy money on PC right now, a modest update is a better choice with another upgrade when better hardware arrives.

It's the exception as you said so it will be ok! It was one of the games I wanted to play but it looks sooo gorgeous that on mid settings I guess I'll be able to run it without problems. To be honest I don't really mind about getting max setting as it takes more than $1000 and that's certainly a barrier I am not willing to cross. I never really cared about them either but I want good performance on the games.

I play LOL with 25 fps and it's getting quite hard to play lately xD.

I think the PC was last updated in .... 2004 maybe... so maybe it's just too old!

So... how do I check my monitor stats?

I'll see what I can find here in stores. I can't buy parts from foreign sites, importation are closed here for the most part.

Man...your PC needs to be really bad to even LOL run that low

In reality the true master race would have all 4, gaming pc, xbo, wiiu, and ps4.