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Games like Asset Cat

Paint of Persia is a rotoscoping pixel-art tool
Easily create tileable tiles for your game!
Procedural textures authoring tool
Free, easy to use and flexible level editor.
3D Showcase Tool
Material Graph Editor for Urho3D engine
Create cool 2D games with a free game editor!
The HTML5 2D+3D game maker. Open source and collaborative.
A tool to visualize and compare the heights of your characters - and change them in real time.
Turn pixel art into an NES ROM!
A high-end code editor for GameMaker: Studio / GameMaker Studio 2
An open source ASCII-based art, animation, and game creation tool.
8Bit / PixelArt converter for sprites & videos
Make your projects done with the super-powered organizer
Open Source 3D Game Engine
A blender add-on that contains tools to ease the creation/import process of assets into Godot Game Engine and others.
A pixel tool for Famicom/NES game development.
Animation & games programming language for kids and beginners
Chiptune tracker (NES/FM/sampler)
Streamline plugin creation for construct 3
The Best Doom-clone on the web!