Can you believe it's been over eight years since SpaceChem first launched? Today we're releasing a community-driven update featuring a host of bug fixes, improvements, and new journal puzzles. Special thanks to 12345ieee and Csaboka, who did most of the actual work for this update.

• Added a bunch of new user-created puzzles to ResearchNet.
• Added a right-click menu to the inside of reactors with options to swap colors, mirror the program, and reset the contents of the reactor.
• Added an option to the options menu to show bonder priority in reactors.
• Improved the performance of the fastest playback speed in non-defense puzzles so that it now runs as fast as your computer can handle.
• Enabled all of the "Greek symbol elements" in ResearchNet puzzles.
• Added the ability to add bonds to the "unknown element" symbol in molecule annotations.
• Changed reactors to be processed in topological order so that there is no longer a need to consider "reactor priority" when optimizing your solutions.
• Changed the video recording logic to prevent videos from being too short or too long.
• Fixed a bug where random inputs varied depending on your operating system. The new behavior should be identical to the old behavior for Windows users. Impossible scores will be removed from leaderboards in the coming days.
• Fixed some obscure bugs that have somehow persisted over the years, including missed collisions, asymmetrical collisions, "molecule smashing," and "telekinesis."
• Fixed a bug where you could delete symbols while a solution was running.
• Fixed a bug where leaderboards would sometimes be empty for players with computers set to non-English locales.
• Fixed a bug where wrong outputs were sometimes accepted.
• Fixed a bug where you could lose after winning a defense puzzle.
• Fixed a broken YouTube link for the optional tutorial video.
• Removed all YouTube upload functionality from the game.