Hi @Gijs@sciensman
I was just watching some of that tutorial and there you posted it.
I think low-poly is doable in Rhino the mesh tools in v7 are pretty good.
I don’t know unity but I think you skin/bone you characters in unity which means it could be a simple export as obj file from Rhino. I’m sure there’s tuts on youtube for that.
you can use the command ReduceMesh, if you have a preexisting texture, you can also use Quadremesh which outputs beautifully retopologised meshes, but by discarding the texture unfortunately.
Forgive me I forgot you don’t have youtube access.
If you have access to Unity they should have tutorials and training there you can engage in. Also if you join art station they might have free courses on that subject.