[whynotmaybe]

You mean the remake of hexxagon from 1993?

https://www.myabandonware.com/game/hexxagon-1pf

[acheron]

Hexcells is nothing like Hexxagon. Other than the hexes.

[shagie]

And hexes are only one of the tile sets. They're the easiest. Squares are a bit more difficult. Triangles can get crazy. Infinite triangles can get most confusing.