gdevelop
W.A.I.T.
(What Am I Trading?)
They have links to trade-based social (ad) platforms such as youtube, facebook and the like, inside the app itself. And they may allow users to publish their apps in trade-based game stores.
DESCRIPTION:
Open-source, cross-platform game creator designed to be used by everyone – no programming skills required.
What makes GDevelop unique and so easy to use are the events. Events are a powerful way to express the logic of your game, without having to learn a programming language. Games created with GDevelop run anywhere and can be exported in a single click.
Use ready made objects from the asset store or create your own from scratch. Choose sprites, particle emitters, texts, videos and many others to build the scenes of your game.
Add effects to the layers and objects of your scene. These effects allow to quickly changes the atmosphere and rendering of your game in one click.
Dozens of additional behaviors are available through community extensions. You can import them in one click directly from the GDevelop editor.
The scene editor lets you visually edit your levels. Use Piskel, a powerful sprite editor, Jfxr for sound effects, Yarn for dialogues, integrate assets from the asset store or use the debugger to inspect your game while playing it.