Looking for games with good replayability or simly addictive to waste time

Kerbal space program, you have 5 hours left to buy it on sale

FTL: Faster Than Light,
Risk of Rain,
Super Hexagon

Dragon Age: Origins. Indies are ok, but they are mostly for timekilling, completing 100% achievements, and there is no more fun left in them after a few hours. If you like longer gameplay, and difficulty, try Super MEat Boy, it's on sale on Steam right now.

The three games you listed there - Minecraft, Terraria and Starbound - have the highest replayability of any game I can think of. But I'll try to contribute. These are fairly well-known:

Dark Souls 1 - Very difficult, somewhat linear, can play New Game + after the game is beat
(Probably Dark Souls 2, but haven't played it)

Rogue Legacy - Difficult rogue-like-like, reminiscent of retro games, can play New Game + after the game is beat

Saints Row 3 and 4 (probably the others too) - Tons of collectibles and side missions to keep you busy.

Rust - it's in alpha and it's kinda rough right now, but you can spend hours and hours playing it

Dungeons of Dredmor

Fallout games

Recettear

These first come to mind when I think about games that are on Steam.

edit: would like to add Valdis Story: Abyssal city and Ys games to that list

dota 2 and by by to your life

Baldur's gate II: Enhanced Edition, Fallout Series, Deus Ex 1 and 3

Mount and Blade Warband. It's clunky but oddly addictive. The game ends when you decides to stop playing.

NEO Scavenger
http://store.steampowered.com/app/248860/

For me - Mirror's Edge. Completed it 8 times :3

clicky 1

clicky 2

Transformice

The Sims 3 comes to mind. Replayable and simly.

What about Reus?

Cat Mario xD game link
you definitely have to replay it & its simly addictive to waste time :P
video

Don't really know if that is something for you but you can definitely "waste" a lot of time in Saints Row The Third.

The Binding of Isaac is your best choice

Dark Souls 1+2. The first one is a terrible abomination of a port though, but the second one is TERRIFIC!

Spacebase DS9 and X3 terran conflict

Creeper World 3 is pretty cool. It's sort-of an RTS with a little bit of TD where your opponent is an endlessly-spawning goo that consumes everything in its path. You build up bases, terraform the land, struggle to keep your base dry and eventually gain a foothold, then crush your enemy. Then you finish the mission and someone on the leaderboards beat it in a tenth the time you took and you go back and see how you could make a few daring strikes here and there and pull off the impossible.

The previous two games were flash games and you absolutely don't need to play them first. The plot won't make much sense, but spoilers, it doesn't anyway, possibly even to the main characters. It's still entertaining to follow it. There's a full campaign, user-created content (with some scripting stuff for custom units and unique maps!), procedurally-generated maps, and damn hard procedurally-generated maps.

It's also going for 2 keys on Steam Trades, if you're cheap.

Edit: I hadn't watched it before, but the trailer on the Steam page is a pro-watch if any of the above sounded remotely appealing.

Spider-Man Web of Shadows, Mass Effect series, Dishonored, Star Wars Jedi Knight: Jedi Academy, Star Wars Knights of the Old Republic series, Deus Ex and Deus Ex Human Revolution, any game with a moral choice system actually.

Portal, The Binding of Isaac, Garry's Mod (Trouble in Terrorist Town to be precise).

Dungeons of Dredmor, Super hexagon, Cargo Commander. My personal recommendation would be Path of Exile; free and can waste hours (into the triple digits) mastering the game.