Looking for games that have a lasting replay-ability.

Realm of the Mad God, it's free and you can play it in your browser :)

Transform your SW in paypal, go and buy Diablo 3 or Starcraft II... replay value over 9000aaaaaaaand...

Games that are known for lasting more than a decade with great success are Diablo 2, Starcrat, Heroes of Might and Magic. All have the replayability factor. Currently the only proper game that can keep you playing for years is Path of Exile. If you are into hack'n'slashes, that is.

Saint row 3 > All

Saints row 3 or Left 4 dead 2

Team Fortess 2, Left 4 Dead 2, The Binding of Isaac, FTL: Faster Than Light, Just Cause 2, Super Hexagon.

Hey guy let me offer the best advice for you economically:

There was a pricing snafu for the Galactic Civilizations bundle, and Galactic Civilizations 2 Ultimate is one of the best 4x games of modern times (DO download the manual for it) it is just vast and there's so much to do and so many different ways to win.... and it's a $20 game you should be able to get pretty cheap still because steam messed up the bundle price and people bought a lot of them (unfortunately I missed this or I would offer it to you)

Hang on to your money man, only buy games when they are very cheap! Also realize that you can trade for a people for a lot of games for TF2 keys, add me and we'll talk further on this.

BUT I REPEAT: Do not EVER pay full retail for any game! It's a terrible waste of money! there are daily, midweek, and weekend deals constantly, plus 2 or 3 major steam sales per year, plus all the other sites selling steam keys and dirt cheap bundles like indiegala, gmg, etc, etc.

Any rogue-like will do.

Any good roguelike/dungeon crawler.
Dungeons of Dredmor may be the best choice but now I'm playing Sword of the Stars: The Pit and I think it's a good game.

FTL: Faster Than Light. Bought it for £3.50, didn't realise I'd end up playing it for over 150 hours. Absolutely brilliant game.

If you like sandbox games you might want to check out Garry's Mod.

Civ 5 if you want to watch the days hours disappear in the blink of an eye, X-Com for something less life consuming, or for a non-strategy title, Cave Story + is worth every penny and I've played through the game like 6 times now over 3 different consoles.

Even if most gamers say that Just Cause 2 is "Play the story (it sucks), free roam around the 400 square miles tropical island, blow up a few fuel shaft and then that's all there is to it." Still, it's the game I've played the most (around 263 hours). So it all depends, if you like to free roam in a sandbox kind of game while blowing up a beached whale and fuel shafts AND giants statues, and then parachute up a mountain, grapple to a plane, throw the pilot out and take the plane, then crash into a tower 9/11 style, this game is for you.

As of now I have picked up Bioshock infinite(got it really dirt cheap in a trade so it is what it is), Sonic transformed racing (not sure if the dlc is worth getting but trying to trade for it regardless) , Star wares knights of the old republic, and installed portal 2.

Currently looking into getting Mount and blade warband(collection is only 5 $ more so ill probably get that) (fun demo like i played it for a long time for a demo), Torchlight 2, civ 5, and maybe garry's mod. Adding and subtracting to this list based on the trades I can get trying to save the wallet to fill in the blanks.

And how about a MMORPG?, Tera is really good with the lancer class and of course f2p.

I replayed Evil Genius a few times. Saints Row 2 and 3 can get pretty high in hours depending on how you play, though a lot of people prefer one over the other, so you would likely look at if you want more serious or more goofy.

XCOM

Torchlight 2.