The eleventh Spring Thing was organized by Greg Boettcher.
- August 16, 2012: Spring Thing 2013 was announced.
- March 1, 2013, noon, Eastern US Time: Deadline for authors' intents to enter.
- April 2, 2013, noon, Eastern US Time: Deadline by which authors' entry fees, games and walkthroughs must be received by the organizer.
- April 2, 2013: Games were released, voting started, and the end of the voting period was announced.
- April 28, 2013, 11:59 PM EDT: Voting deadline.
- Witch's Girl (Mostly Useless; Twine).
- A Roiling Original (Andrew Schultz; Glulx).
- Encyclopedia of Elementals (Adam Holbrook; Quest).