Hi!
My name is Dmitry. I'm russian guy. I created game engine.
Here https://github.com/dmitrykolesnikovich/featurea you can clone it from github.
Here is small video you can watch https://www.youtube.com/watch?v=yQC1akqsvlo.
It pretends to be the best 2D game engine on Java.
You can find sample here https://github.com/dmitrykolesnikovich/featurea/tree/master/samples/mario
Dmitry