Unreal Indie Bundle offers seven games for $20

Epic Games is pleased as punch to present a collection of seven highly-praised indie games built on its popular Unreal Engine 3 platform.

The Unreal Indie Bundle is available for one week on Steam, and goes for $20/£15/€18.

Pick it up and you'll grab the following seven titles, each with accompanying PR blurb:

• The Ball – Teotl Studios
  The Ball is a first person action-adventure game featuring a captivating single-player campaign. When a swashbuckling archaeologist working on a dormant Mexican volcano gets stuck in a cavern, it doesn’t take long to realize there is much more to this exotic place.
• Dungeon Defenders – Trendy Entertainment
  Save the land of Etheria from an Ancient Evil in the tower defense action-RPG Dungeon Defenders. Create a hero from one of four distinct classes to fight back wave after wave of enemies by summoning defenses and directly participating in the action-packed combat.
• Primal Carnage – Lukewarm Media
  Primal Carnage is an online multiplayer shooter that engrosses players in skilled PVP combat, team-based strategy and savage class-oriented matches unlike any previously experienced. Be it an armed human mercenary or a cunning dinosaur, Primal Carnage unleashes the inner beast in anyone who seeks to survive amongst the fittest.
• Q.U.B.E. – Toxic Games
  Set in a mysterious and abstract sterile environment, Q.U.B.E. (Quick Understanding of Block Extrusion) is a first-person puzzle game that challenges players to navigate each level by manipulating coloured cubes that surround them.
• Sanctum” – Coffee Stain Studios
  You think Tower Defense games are all about building? You thought wrong. Sanctum is not an average tower defense title. When the havoc starts, join the fray! As a pioneer of the first-person shooter - tower defense genre, Sanctum takes the best of both worlds to deliver an epic, one-of-a-kind experience.
• Unmechanical – Teotl Studios and Talawa Games
  Unmechanical is a puzzle adventure that combines tricky puzzle solving, alluring exploration and an engrossing atmosphere. Set in a fantastic world of flesh, rock and steel, the journey to freedom requires solving a great variety of puzzling challenges. While it’s easy to pick up and play, later challenges may prove very difficult indeed.
• Waves – Squid in a Box
  Shooter fans deserve more. And those who haven’t discovered the pleasure of twin-stick destruction deserve an entry point. Introducing Waves, a twin-stick shooter that can be played by anyone, but with a high enough skill threshold to keep even the most hardened shooter fan entertained.

All games are available on PC, and a few offer Mac and even Linux versions, too.