Dungeon Defenders, Trendy Entertainment's stalwart downloadable title launched in the midst of the end-of-year madness, recently released its software development kit (SDK) and a pre-alpha pass to a new game mode on PC.

The Dungeon Defenders SDK allows modders to tweak all aspects of the game and create... well, whatever they've got the the talent to come up with. Compelling new levels would be a great place to start.

Trendy also launched a pre-alpha pass for the game's 16-player capture the flag mode. In it, two teams of eight compete to hold the flag longest, with players able to import their existing characters. It is an alpha, so dive in if you're ready to give plenty of feedback.