It has been a good while since I last played these games. So, I decided to download them once again. While downloading, I got curious and decided to do research. That's how I found out which engine they were made in!

It is genuinely awesome just how talended these developers are, and also how straightforward and accessible the Sonic Worlds engine is!

Anyways, here are the links to these fangames:

• Sonic Classic: https://info.sonicretro.org/Sonic_the_Hedgehog_Classic

• Sonic Classic 2 (since this fangame was cancelled, there are only backups): https://gamejolt.com/games/SonicClassic2/842625

• Sonic And The Fallen Star: https://stardropsmh.github.io/sonic-and-the-fallen-star/