I have 5 bucks left on a card(I think), the three games I am thinking of getting right now are the Neverwinter Nights Diamond Edition on GOG, The Blitzkrieg Anthology on GOG or Garry;s Mod on Steam. Please recommend any five dollar game you think is worth buying, it doesn't have to be one of my choices. I attached photos of games I already own.

I had enough to get FTL and NWN(either that or I slightly went over my limit). Thanks for all the responses, I marked a solution for the guy with the lowest rep since I didn't really feel like only one single comment helped make my decision.

Feel free to suggest other games I missed or that you think are awesome regardless of price.

I'm pretty sure there's more gameplay with exiting mods in NWN than you can shake a stick at. If you like NWN or games like it, get that one.

Oh wait, I almost forgot, BUY ARCANUM!

I already have Arcanum, I expected most people to recommend NWN:DE out of the three I am considering. What about about Garry's Mod? I have had an interest in Garry's Mod for years now, I watched laughter inducing videos on Youtube featuring that game.

Sacrifice. It's that one great game you missed...

I just don't much care about Garry's Mod, only you know whether you'll like something like that or not.

Freespace 2, which is regarded by many to be the best space sim ever made.

Plus, there are various mods you can find in the Freespace forum which will enhance the graphics and improve the resolution of the game.

The Stanley Parable. It's free and it's awesome.

It's a Half-Life 2 mod but if you don't have the game all you need is to download the SourceMod Tools from the tools section in your Steam client, then extract the mod into it's folder. Here it is:

http://www.moddb.com/mods/the-stanley-parable

I loved NWN, so out of your choices, I'd definitely recommend that one. Of course, you do not seem to have my favorite game of all time, at least on GOG, so I cannot recommend enough, Heroes Of Might & Magic 3.

Evil Genius. You have Dungeon Keeper. If you like that game then Evil Genius is an excellent game along that line. Build an underground lair, strategy to deal with intruders, try to take over the world.

I'll second that.

I'm also surprised to not see any Might & Magic games there. The 6-pack is an awesome deal, even if you find the first two to be too old

Thanks for the recommendation, Freespace 2 doesn't really interest me that much though, I assume that the game is mission based and level to level instead of free-roaming type game play that one would find in Freelancer. I don't have a joystick either, a game like Freespace 2 would be rather awkward played on a laptop touchpad.
At this point I am considering a purchase of one of these games Neverwinter Nights, Faster Than Light, Garry's Mod(please provide some sort of information/incentive if you think this game is worthy of my five bucks).

Ah yea FS2 doesn't sound like a good match. Though I haven't played it, everyone seems to love FTL. You probably can't go wrong with that. Others probably have better recommendations for you as well. :)

Side note - I would recommend getting a cheap USB mouse for your laptop!

Based on the direction you are leaning, you'd probably get more time out of NWN or FTL. Evil Genius is different but you're not going to have a massively long or life-changing experience with it.