If you're looking to catch up on the Lego Batman games before the release of LEGO Batman 3: Beyond Gotham, digital PC game retailer Green Man Gaming is currently offering them for a 75 percent discount, along with some other games in the Lego series.

The weekend sale includes:

• LEGO Batman: The Videogame -- $5 (normally $20)
• LEGO Batman 2: DC Super Heroes -- $5 (normally $20)
• The LEGO Movie: Videogame -- $7.49 (normally $30)
• LEGO Harry Potter: Years 1-4 -- $5 (normally $20)
• LEGO Harry Potter: Years 5-7 -- $5 (normally $20)
• LEGO Lord of the Rings -- $5 (normally $20)
• LEGO Marvel Superheroes -- $5 (normally $20)
• LEGO the Hobbit -- $7.49 (normally $30)

You can also get the LEGO Complete Pack that includes the Harry Potter, Batman, and Lord of the Rings Lego games, though it doesn't offer an additional discount, or preorder LEGO Batman 3: Beyond for a 10 percent discount.

All games will require a Steam account to play. The sale will last through the weekend, until 9:00 am Monday, September 8.

The Lego series recently crossed 100 million units in lifetime sales, joining juggernaut franchises like Grand Theft Auto and Final Fantasy in reaching that sales mark. For more on Lego Batman 3: Beyond Gotham, be sure to check out GameSpot's previous coverage, including our interview with the game's developers at E3.