In 2018[4], Nitrome pitched to Sega the idea of a Sonic the Hedgehog platforming game that had a daily level, in the same vein of Leap Day[5]. Included as part of this pitch was a playable tech demo for the game, titled Sonic demo[5]. This idea was rejected by Sega[5].
Nitrome did not share anything about this project until December 23rd, 2021, when they shared the pitched project and footage of the demo on Twitter[5]. Despite its cancellation, some of the ideas from the project were reused in Super Leap Day[5][6].
The Sonic game would have had a daily level set in a different Zone each day and considered an Act of that zone[9]. Levels could have a Bonus Stage[6]. One of seven Chaos Emeralds could be earned each day, and players who earned all 7 in a week would be rewarded with a Super Sonic at the end of the week[9]. Levels would be procedurally generated like Leap Day, where levels are made up of pre-made level chunks and the selected chunks and Zone are determined based on a seed created based on the date of the level[5].
Sonic would have automatically run and would jump when the screen was tapped and jumped and rolled when the screen was tapped and held[10][8]. Sonic was not able to transition into a roll while walking as Nitrome was not able to find a method that worked with the game's one-button control scheme[7][11]. Sonic's movement physics were almost identical to that of the 2D Sonic games[12].
The game would have used many old and new Zones[13]. Nitrome mentioned that had the project been greenlit, one of the Bonus Games would likely have been pinball-themed[14].
↑Nitrome on Twitter:
[1]: The overall platform list wasn’t decided. as was just a pitch for mobile., 27 Dec 21, retrieved 28 May 22.
↑ 2.02.1Mat Annal on Twitter:
[2]: I loved working on the art for this., 23 Dec 21, retrieved 27 Jan 22.
↑ 3.03.13.2Mat Annal on Twitter:
[3]: You guys should know that Markus did the animations and Chris who is a Sonic nut did a spectacular job replicating the correct physics., 23 Dec 21, retrieved 27 Jan 22.
↑Nitrome on Twitter:
[4]: About 3 years ago. [original tweet was posted on December 21, 2021], 22 Dec 21, retrieved 28 May 22.
↑ 5.05.15.25.35.45.55.6Nitrome on Twitter:
[5]: Did you ever wonder why we added wall running to #SuperLeapDay? http://apple.co/-SuperLeapDay A long time ago we pitched a #Sonic take on the Leap Day format. Sadly the #SEGA gods did not see the potential. But we did make this demo and we liked the mechanic so decided to keep it. [video of demo] , 23 Dec 21, retrieved 28 May 22.
↑ 6.06.16.2Nitrome on Twitter:
[6]: Our plan would have added bonus rounds like the original games and this is another thing we took forward in inspiration on Super Leap Day: [video of Racing Day] , 24 Dec 21, retrieved 28 May 22.
↑ 7.07.17.2Nitrome on Twitter:
[7]: No it was all one touch like our games Leap Day / Super Leap Day, 22 Dec 21, retrieved 28 May 22.
↑ 8.08.18.28.3Nitrome on Twitter:
[8]: We did experiment with this. Sliding [your finger down] doesn’t work because you have already tapped to jump and if you delay jumping in any way to release or a timer everything feels unresponsive. What did work though was keeping held to roll. It does mean you always jump but it feels natural., 27 Dec 21, retrieved 28 May 22.
↑ 9.09.19.2Nitrome on Twitter:
[9]: The plan was that like LeapDay every day was a brand new zone. With everyone competing on the same short new Act. Daily Chaos Emeralds could be earned. Players who earned all 7 would be rewarded with Supersonic at the end of the week., 23 Dec 21, retrieved 28 May 22.
↑ 10.010.1Nitrome on Twitter:
[10]: [video of demo] , 23 Dec 21, retrieved 28 May 22.
↑Nitrome on Twitter:
[11]: One thing we couldn’t get to work when we made the demo was a way to get sonic to roll on the floor within the one button limitation., 22 Dec 21, retrieved 28 May 22.
↑Nitrome on Twitter:
[12]: The engine was pretty authentic we made for it though and was very close to the Sonic engine logic., 22 Dec 21, retrieved 29 May 22.
↑Nitrome on Twitter:
[13]: The idea was to have a brand new short Level (Act) every day exploring many old and new themes. [pictures] , 23 Dec 21, retrieved 28 May 22.
↑Nitrome on Twitter:
[14]: If we had done Sonic we almost certainly would have included a Pinball bonus game…, 27 Dec 21, retrieved 29 May 22.
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