The infinitely stacked world \(D^2 \times \mathbb{R}^2\) is the universal cover of Bobs world \(S^1 \times D^2\), as it is simply connected and covers Bobs world (see the definition of universal cover above).
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That said, I have written my own C# layer on top of SDL for general rendering and input utilities I share across projects. I make highly opinionated choices about how I structure my games so I like having this little layer to interface with. It works really well for my needs, but there are full-featured alternatives like MoonWorks that fill a similar space.
100x speedup is achieved by comparing HH with bidirectional A*.