My experience with XNA (a C# based gaming environment) was that allocating memory and incurring GC was death. So you bent heaven and earth to avoid making garba

My experience with XNA (a C# based gaming environment) was that allocating memory and incurring GC was death. So you bent heaven and earth to avoid making garbage. I haven't used Unity. It's probably better. (XNA was essentially abandonware a couple years after Microsoft hatched it -- a typical myopic lifecycle and a good reason why you can't trust MS with your platforms unless they have a really strong money story behind them).