Back in 2020, I messed around with Unity and made a proofofconcept for a Sonic game based on E102 Gamma. It was, shall we say...an adventure.

Runhurd(Runnic) Original Gamma model
SAB64 Original MMD assets, DL here: https://www.deviantart.com/sab64/art/...

Table of Contents
0:00 Intro
0:37 Aiming Mechanics
1:00 Respawn System
1:27 Spinner AI
1:42 Monitors
2:13 Unified Station Square Oddity
2:47 Adventure Field Transitions
3:52 First Completable Action Stage
4:29 Conclusion
5:35 Teaser for next video?!
5:56 End Screen