The Binding of Isaac (now at Afterbirth+) $

[getter77]

http://store.steampowered.com/app/250900/  Win/Mac/Linux $14.99

When Isaac’s mother starts hearing the voice of God demanding a sacrifice be made to prove her faith, Isaac escapes into the basement facing droves of deranged enemies, lost brothers and sisters, his fears, and eventually his mother.

Gameplay
The Binding of Isaac is a randomly generated action RPG shooter with heavy Rogue-like elements. Following Isaac on his journey players will find bizarre treasures that change Isaac’s form giving him super human abilities and enabling him to fight off droves of mysterious creatures, discover secrets and fight his way to safety.

About the Binding Of Isaac: Rebirth
The Binding of Isaac: Rebirth is the ultimate of remakes with an all-new highly efficient game engine (expect 60fps on most PCs), all-new hand-drawn pixel style artwork, highly polished visual effects, all-new soundtrack and audio by the the sexy Ridiculon duo Matthias Bossi + Jon Evans. Oh yeah, and hundreds upon hundreds of designs, redesigns and re-tuned enhancements by series creator, Edmund McMillen. Did we mention the poop?
Key Features:

    Over 500 hours of gameplay
    4 BILLION Seeded runs!
    20 Challenge runs
    450+ items, including 160 new unlockables
    Integrated controller support for popular control pads!
    Analog directional movement and speed
    Tons of feature film quality animated endings
    Over 100 specialized seeds
    2-Player local co-op
    Over 100 co-op characters
    Dynamic lighting, visual effects and art direction
    All-new game engine @60FPS 24/7
    All-new soundtrack and sound design
    Multiple Save slots
    Poop physics!
    The ultimate roguelike
    A bunch of achievements

Uber secrets including:

    10 Playable Characters
    100+ enemies, with new designs
    Over 50 bosses, including tons of new and rare bosses
    Rooms FULL OF POOP!
    Mystic Runes
    Upgradeable shops

The greatly overhauled return of one of the greater shots in the arm/contention begetter the Roguelike scene has received in the commercial realms and otherwise in modern times!   

[getter77]

v1.01

We published a patch today that should address some issues. Your game should show v1.01 on the title screen after the update.
If you do not immediately get the update, try restarting your Steam client.

Crash on startup
To all the people who were not able to start the game at all:
We worked around some OpenGL issues in the v1.01 build. You might be able to start the game now. We sadly could not test this fix properly, because none of the PCs in our office have that problem. It seems it only happened on machines that don't support OpenGL 3.0.

Lost Saved Games
To all the poor people who lost their saved games, we are incredibly sorry for that. It didn't happen to us during testing, and we think it might have something to do with how Steam Cloud is used in the game.
The patched game has slightly more robust Steam Cloud handling and should do better. If you still experience problems, you can now turn off Steam Cloud syncing by setting SteamCloud=0 in the Options.ini. Your savegames will still be uploaded to the cloud when that setting is off, but your local savegames can't be overwritten by cloud files anymore.
If you had already unlocked a lot of Steam achievements and don't have them in your local save file anymore, you can restore them by pressing ALT + F2 (or just F2 for Mac/Linux players) on the Stats menu page.

Black Screen on OS X
Players reported that OS X would show a black screen when either color correction was turned on or when a shockwave effect was being displayed in game.
We fixed the color correction, and disabled the shockwave effect on OS X for now.

Pause on lost window focus
Some people had a problem with this. It is now possible to turn of the auto-pause after the game window loses focus by setting PauseOnFocusLost=0 in the Options.ini.

Other major issues that are now fixed
Crash during two of the later boss fights
Crash when using the Fortune Teller
Xbox 360 controller issues on Linux
Soundtrack DLC not downloading any files
Haunt staying invincible sometimes
Player being out of bounds after returning from .....

We also fixed some minor gameplay related issues that I will not mention here in detail.

[getter77]

Afterbirth Mega-Expansion DLC $10.99   

When Isaac’s mother starts hearing the voice of God demanding a sacrifice be made to prove her faith, Isaac escapes into the basement facing droves of deranged enemies, lost brothers and sisters, his fears, and eventually his mother.

Gameplay
The Binding of Isaac is a randomly generated action RPG shooter with heavy Rogue-like elements. Following Isaac on his journey players will find bizarre treasures that change Isaac’s form giving him super human abilities and enabling him to fight off droves of mysterious creatures, discover secrets and fight his way to safety.

The Binding of Isaac: Afterbirth is the massively updated expansion to 2014's roguelike of the year, The Binding of Isaac: Rebirth. Following Isaac one more time on his journey players will find bizarre treasures that change Isaac’s form giving him super human abilities and enabling him to fight off droves of mysterious creatures, discover secrets and fight his way to safety.

This time, nothing is sacred.
Key Features:

    Over 100 hours of MORE gameplay
    Greed Mode - a whole new way to play, focused on risk/reward
    Expanded main game - a new final area with a new final boss
    Daily Runs – play a new official run, everyday!
    Online Leaderboards - compete for highscore/best time
    10 totally new and awesome challenges!
    1000+ new room designs, as well as room
    MONSTROUSLY UPDATED WEAPON COMBO SYSTEM!
    120 new items--not counting tons of new pickups, chests, pills, bombs and cards--taking the item count up beyond 500!
    Alternate soundtrack!
    Tons of new secret transformations!
    MOAR new achievements


Uber secrets including:

    Lilith, mother of demons, a totally new playable character
    4 new alternate chapters with new enemy types and visual themes
    Revised seed code combo system and new special seeds
    100+ enemies, with new designs
    8 new bosses
    Even more rooms FULL OF POOP!
    and probably at least 5 other features we can’t remember due to all the crap that we threw into this little monster

Equal to, if not fare greater than, the prior Rebirth Edition---this is essentially a gamechanger across the spectrum.  Big release doubtless to inspire yet more projects!   

[getter77]

Afterbirth+ Expansion Expansion DLC     $9.99

The latest expansion to The Binding of Isaac: Rebirth features:
- 55+ new items
- New final chapter with boss and ending
- New playable character
- Greed hard mode
- Daily greed runs
- 5 new challenges
- Loads of new achievements
- New bosses and other little editions
- PLUS DEV TOOLS! so you can design, edit and play and endless number of mods, features and whole new games that the community will no doubt eventually design..
- 100s of new rooms! ( tons of new ultra rare rooms )
- new victory lap feature! (allows the game to continue when finished)
- Bestiary! (enemy collection page that keeps track of everything you kill in game)
- 2 new transformations!
- Small monthly content updates! ( every month after release we will be updating the game with our favorite fan made designs, monsters, items maybe even challenges? who knows…)
- 4+ new bosses and a new alt forms for existing bosses!
- New enemies, features and new champion forms!
- New cut scenes and music tracks!