This thread will let you know what has been changed for this game, in case you're not in the Sonic Speedrunning discord server.
Added the rule 'Whilst 'with pauses' allows you to pause during the run, unreasonable pauses are discouraged, and may be rejected at the moderators discretion.' to the Level Leaderboard.
Updated Co-op to include 1p2c (one player 2 controllers) as well, as we have a run that fits the criteria of a single-player controlling both Sonic and Tails, and it's been discussed a few times in the past as to whether we should allow them as co-op runs :)
Due to memory manipulation found via a new death warp strat in HC1, added a game rule "unless stated in category rules, no pre-run memory manipulation is allowed".
As of today, any new submissions of S3K from the Steam version will no longer be allowed. This is due to a couple of factors but mostly being inhibited availability as SEGA delisted it when releasing Origins. Any existing runs will remain unaffected.