It is available for limited time only, not sure for how long though.

The Bundle includes:

Q.U.B.E.
Sanctum
The Ball
Unmechanical
Dungeon Defenders
Primal Carnage
Waves

Most notable ones look like Unmechanical & Krater which are $10 & $15 on Steam respecatably.

Unmechanical
for: steam (pc), windows, desura

The Path + OST

Create your own custom bundle from a selection of 9 games. Pick any 2 games for a minimum of $1.50 and support Child's Play in the process.

Pay What You Want, minimum $1 to receive Steam keys

Shatter RRP $9.99 http://shattergame.com/
Torchlight RRP $14.99 http://www.torchlightgame.com/

Don't let the "back-to-school blues" get you down, Indie Royale's got you covered with the Back to School Bundle featuring seven great indie games, including an exclusive debut for Bunny Must Die!

Indiegala 8 is Up! Pay at least $1 to receive four games:

• Dangerous Waters (Steam)
• Battle Mages: Sign of Darkness (DRM free non-Steam)
• Sentinel 3: Homeworld (DRM free non-Steam)

Indie Royale is back with a bundle that will take you on unique adventures from the comfort of your own living room: "travel" to the moon, the American Old West, a starship called the Mungunghwa, and

The Green Light Bundle celebrates the launch of Steam Greenlight (TM) by making these games available for both PC & Mac. The bundle is an initiative by Stolen Couch Games.

Get 5 games + a special music collection for a min. of $1 , as goals are met, lots of cool bonuses are unlocked! Benefits charity: water.

The Indie Royale game bundle site offers a great catch of indie games in the Gone Fishin' Bundle, featuring seven independent games, including three games exclusively debuting on this bundle for PC!

Indie Royale marches in with the July Jubilee Bundle, featuring ten independent games - valued at over $50 - for a bargain, fluctuating price of around a tenth of that cost!

Groupees will be launching their second Build a Bundle which allows buyers to customize their bundle from a selection of 12 games.

The GameDev Bundle is a collection of 6 indie games made by community members of the subreddit /r/gamedev at reddit.com.

The Indie Royale game bundle site tempts you to stay inside during the warm summer months with the Summer Bundle, featuring eight brilliant independent games available at a bargain, fluctuating price.

IndieGala - giving fans of indie games and indie music a chance to save money on awesome games and albums while contributing to a good cause.

Contribute the $1 minimum to receive:

Groupees are back again with thei third ‘Be Mine’ Indie Bundle

Contribute $4 minimum to receive:

The Indie Royale game bundle site returns with the June Bug Bundle, featuring a swarm of four fantastic independent games available at a bargain, fluctuating price.

Just got an email from them this morning

The Indie Royale game bundle site returns with the Graduation Bundle, offering five fantastic independent games available at a bargain, fluctuating price - including cult Russian first-person classic

Welcome to IFK: Be In the game. Where you have the chance to not only support your developers, but be a part of a video game, in the credits or even naming a level.