Defold vs Ren'Py

Defold is a game engine for building cross-platform 2D and 3D games. Its toolchain combines an editor, runtime, scripting workflow, build pipeline, and deployment flow. Game logic is written in Lua; native extensions can use C, C++, Objective-C, Java, or JavaScript. Visual editors, a debugger, profiler, particle effects, animation, and integrated 2D and 3D physics are included. Target platforms listed are Windows, macOS, Linux, iOS, Android, HTML5, PlayStation 4, PlayStation 5, and Nintendo Switch. Integrations include Firebase Analytics, AdMob, in-app purchases, push notifications, Google Play services, Nakama, and PlayFab. The Asset Portal offers reusable components and extensions. Live Update can provide additional game content after the initial download, with customizable content verification. Source code for the engine, editor, and build tools is available on GitHub under a developer-friendly license derived from Apache 2.0. Defold costs nothing, with no licensing fees, royalties, or runtime fees. Community help is available through a forum, and technical support contracts are available if needed.

Ren'Py is a free visual novel engine for making interactive stories and life simulation games with words, images, and sounds. Its script language handles visual-novel writing, while Python can be used for more complex game logic. Default games include menus, automatic saves, rollback, predictive image loading, and mouse, keyboard, or gamepad controls. Creators can customize screens and styles using the screen language and Python. The launcher builds Windows, Mac, and Linux games from any of those desktop systems. Ren'Py also supports Android export and can package games for WebAssembly browsers, though web support is beta and lacks networking and multithreading. It targets Windows 10 or later, macOS 10.10 or later, Linux x86_64 or Arm, Android 5.0 or later, and iOS 11 or later. Building for iOS requires a Mac and Xcode, and that support remains a work in progress. The engine is free for commercial and non-commercial use; most is MIT-licensed, with some LGPL components whose terms distributors must meet.