As I play on a old pc, I can only buy "weak" games

Orcs must die 2 complete edition
Tropico 4 collector's edition
Hero Academy (worse purchase ever made on steam)
FieldRunners 2

All for slightly less than £15
If my PC strength was no object, I would have bought Alan Wake complete edition and Fallout New Vegas complete edition (even though I already own it on ps3)

Indie games work really well in that regard. Actually the PC is only 4 years old and I can run Guild Wars 2, just not a lot of the recent games at decent speed. I've seen a PC around 7 years still run a lot of the indie games well, especially Torchlight 2. Torchlight 2 ran on my dad's netbook lol.

I just don't like spending more then $3ish. I think maybe $5 tops because you know with Steam sales EVENTUALLY a game is going to get hit ultra cheap during a summer or winter sale.

Guess the better question to ask is: what did you buy that you won't play? :P

Since im seeing a ton of internet articles on Steam users not playing over half their library

Since when does that prevent anyone from buying more games?!

Thomas was Alone
To the Moon
Dark Souls 2 (Gift to friend)

Broken Sword 2: The Smoking Mirror | Broken Sword: Director's Cut | Resonance | The Blackwell Bundle (3 games) | Jack Keane | Ceville | The Book of Unwritten Tales Collection (2 games) | The Whispered World | Lost Horizon | Gemini Rue | A New Beginning - Final Cut | Primordia | SimCity 4 Deluxe Edition | Terraria | Reus | FTL: Faster Than Light | Cart Life | XCOM: Enemy Unknown | Sid Meier's Civilization V: Gold Edition + Expansion Brave New World | The Night of the Rabbit | The Elder Scrolls V: Skyrim - Legendary Edition | Endless Space Gold

25 games, if I counted correctly. 13 of those are digital re-buys of (mostly adventure) games I already bought and played retail.

Of the new games I've only played the overhauled Civ 5 so far. Gods & Kings (included in the Gold Edition) and Brave New World are two excellent expansions and turned a good game into a great one. For my first slow playthrough (34 hours this week) I chose the Roman Empire and made Rome the holy capital of protestantism . This could become my most favorite Civ game (I played them all - Civilization is imo one of the best franchises ever created on any platform).

Money spent: Roughly 200€, i.e. 8€ per game.

I went mad last sale and still haven't played a few of those so I learned my lesson, that's why you see 3 titles in OP and not dozens of games like some people buy. 

Fallen Enchantress: Legendary Heroes

Spellforce Collection

A couple DLCs.

I'm happy with that.

PC
Castle Crashers plus DLC = $4.25
Deadlight + Soundtrack = $5.00
Fallout New Vegas Ultimate Edition = $5.00
Mark of the Ninja = $3.75

PSN sale
Batman Arkham Asylum = $5.00

DS - The World Ends With You $22 on ebay. I had it shipped to my college address however, so I'm working with the Postal Service on getting that fixed.

I've only actually finished two games out of my 55 - game Steam library. That's Max Payne and Red Faction Armageddon

I've played a few hours of Max Payne 2.

37 hours on Borderlands

37 hours on Terraria

one hour on Amnesia

11 hours on Crysis, almost finished. Or maybe I did finish? I don't remember.

3 hours on Dead Island

5 hours on Fallout 3

3 hours on GTAIV

one hour on L.A. Noire.

A few hours on each Portal game

One hour on Sleeping Dogs

3 hours Starwars Battlefront II

2 hours Torchlight

6 hours on Limbo

Everything else I pretty much haven't touched.

35 games so far. Not a lot left to buy each day now.