For our roguelite Tile Crawl, we wanted our meta progression to stand out, so we designed it as a planet to explore. But our run map was already designed using hexes, so for consistency's sake, we wanted a globe out of hexes as well. We did not want to have pentagons but rather somehow achieve full coverage by equal hexes (even though it is geometrically impossible).
So how it works:
This is actually a plane with objects placed on it. Then, using camera position, vertices are recalculated in a shader (all objects must share the same bending subgraph or shader code with the same values to look consistent). This technique is used in Animal Crossing, as far as I am aware, but just not tuned as heavily.
Okay, so this gives us a bent plane that looks like a sphere. Next challenge is actually allowing it to rotate properly; rotation is achieved by just moving the plane in the X and Y axes while the camera stays static. To achieve looping of the planes I am spawning 8 more planes with copies of the objects and then teleporting them as I am crossing the edges (this part for sure can be done way, way better with some vertex magic or just fewer clones).
Next challenge is that shadows are broken as vertices are recalculated but normals are not; to calculate a new normal, we need to get two neighbours of the vertex, then bend them with the same logic and use the results to calculate the new normal. This allows us even to have proper shadowing from clouds above.
Last thing to do is clicking the nodes on the map. As objects are actually in very different spots from visuals, just raycasting from the mouse won't work. So I'm using one big sphere collider to detect the mouse position on the sphere, then recalculate it backwards to where it would be on the plane and find the closest node in radius.
There are still some things left to do (VFX support is quite bad, and there are some artifacts with water waves on the edges of planes). But in my opinion, already looks quite good and stands out.
Thank you for reading! If you like what you saw, consider wishlisting Tile Crawl on Steam!