NOTE : This game is NOT made with infinity engine. The models, animations and textures were all exported from the infinity engine and the materials were tried to be remade. Codes for functions character snapping on ground and orientation on slopes were provided by @ZAYgt .
Helped with jump functionality by both @ZAYgt and @Mortimer_ . This is a fangame and every material related to it is owned by SEGA, I don't own any material. The stage is extracted from sonic world fan game (now dx) for now. This game is NOT to be sold.

Another note :
Ignore the ripple particles at the spawn, I forgot to remove them.

What it has :
-Boost power
-Speedometer
-Character orientation on slopes
-Slope physics
-Springs
-Sonic as a playable character
-Animations assigned
-Skydiving
-Braking
-Blinking shoe light
-Glowing eyes
-Air dash
-Time slow down by pressing V
-Dash rings
-Rings

What it doesn't have and needs to be added :
-Shadow as a playable character (it's in development. Thanks to @ZAYgt for exporting the model and animations)
-Rainbow Dash Ring

-Spin Kick

-Quickstep
-Boost aura particles
-Voice
-Dash panels
-Jump panels
-Trick panels
-Self made stages once the engine is ready
-More stages
-And some more stages
-Enemies
-Goal ring and results
-Main menu and stage select
-Gamepad (maybe) and mobile controls
-Lightspeed dash
-Shields
-Chaos emeralds
-Super sonic
-Playtime
-Lives

What needs to be improved :
-Boost aura needs particles and to fade out
-Jump ball not disappearing when you land too quickly

What it doesn't have and i don't think I will ever add it :
-Stage material improvement cuz it's not mine and it will later be removed
-Characters other than sonic and shadow (maybe, just maybe. But if I find people requesting for it I'll try)
-Spin Dash (will add only if anyone requests for it)

-Combat. This isn't sonic frontiers
-Custom character cuz I'm lazy. I'll do it if I get a request tho

If you think something else is missing here, please inform me.