This is Monofoxe - a game engine based on Monogame Framework. Its main goal is to greatly simplify working with Monogame and to provide a basic set of tools enabling you to just create a new project and make a game without removing low-level access to the framework. Monofoxe is extremely extensible and fully compatible with Monogame, which makes it equally great for both small games and big long-term projects.
Get Monofoxe for free (wow!) on our Github and join our Discord server if you have any questions: