Best Sonic Formula?

[Ikagura Ikagura]

Those look WAY better than Frontiers!

I actually would've been fine with a cyber futuristic tron/neon style level even if it was the sole template for the entire game (or at least with a different colour depending of the island).
SRB2 2.2's tutorial had a great aesthetic

I just remembered that the Sonic Simulator from Colors were basically cyberspace levels before the Cyberspace was a thing (I think some of them replicated the layout of Sonic 1's levels too)