Not nearly as sophisticated as everything else in here...but our new game Pinny McBallface was created using Spine with the Haxe runtime. It's an endless pinball game with 60+ unlockable characters, all of which are a similar shape and share a mesh/animations. I loved how easy Spine made content creation so that we could churn out tons of these little guys quickly.
Available on Google Play
A few GIFs of the game in action:
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