When comparing Felgo (formerly V-Play) vs ct.js, the Slant community recommends Felgo (formerly V-Play) for most people. In the question“What are the best 2D game engines?” Felgo (formerly V-Play) is ranked 41st while ct.js is ranked 55th. The most important reason people chose Felgo (formerly V-Play) is:
Qt-Creator IDE with Code Completion, Debugging and Profiling, integrated Quick Help, Version Control and more.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Mature cross platform IDE
Qt-Creator IDE with Code Completion, Debugging and Profiling, integrated Quick Help, Version Control and more.
Pro Easy to learn
Felgo is among the easiest cross-platform tools to use according to a survey done by research2guidance.
Pro In-game level editor
With the Level Editor components, you can let your players share their levels with the whole game community which is cool because you don't need to create new levels on your own, but the community helps you with it. There are other community features like rewards for good level creators that helps getting more downloads.
Pro Felgo game network
Leaderboards, Achievements, Challenges are available across platform, even on Desktop. You can also use Cloud Syncinc of your game data that makes it easy to start a game for example on iPhone and then continue on a Nexus Tablet or the other way around.
It is also convenient because sharing to all kind of game services & networks like Facebook & Game Center is possible with a single API call. Custom hosting of Game Network servers is also possible if you want to keep the player data.
Pro Native performance
Although game logic is provided in JavaScript by you, performance-critical parts of the engine like OpenGL ES rendering or particle effects are implemented in rock-solid C++, providing the ultimate performance your game deserves.
Pro Advanced gaming components
Advanced Gaming Components for handling multiple display resolutions & aspect ratios, animations, particles, physics, multi-touch, gestures, path finding and more.
Pro Felgo build server
No need for native SDKs, Build in and Install from Cloud with the Felgo Build Server.
Pro Rapid development
Cut your development time in half. Using the QML language allows for some powerful features that cut code lines and time. Another helpful feature that can help in this area is that there are more than 50 game demos of all genres that come with full source code, meaning one can easily check to see how something was done.
Pro Support can be found in forums and via e-mail
Felgo has friendly forums where core developers participate as well as fast & helpful email support.
Pro Based on Qt framework
The Qt framework is a great and mature framework on its own. Using Qt as a game engine base is a smart idea.
Pro Runtime-balancing
You can use ready-made components to balance any of your game properties at runtime, so also on mobile devices which is great for adjusting forces or input parameters.
Pro Lots of learning resources
Helps get started and improve with lots of tutorials, demo games, examples.
Pro Social services and monetization
In-app purchases, game and social network integration (such as Game Center and Facebook), ads (with Chartboost and AdMob) and analytics (such as Flurry) are all available across platforms.
Pro Frequent updates
Every 2-4 weeks new updates provide additional features and fixes based on what users wanted the most.
Pro Level store
You can even monetize these user-generated levels with in-app purchases with the Felgo Level Store component if you like.
Pro Beginner-friendly
ct.js is bundled with examples, docs, and easy to follow tutorials. Documentation and tutorials are available in a side panel on every screen.
Pro Skeletal animations with DragonBones support
You can import skeletal sprites and animations from DragonBones, which is also free. Skeletal animations are added to objects through code; developers can listen to marked events in animation, and ct.js automatically associates sounds in a DragonBones project with the game's assets.
Pro Good code editor
The built-in code editor comes with error checking, type checks, code completions accompanied with docs, multiple cursors support, and other modern features.
Pro Open source (MIT)
This means that no one will ever put any features behind a paywall and that you can reliably use ct.js in any projects without worrying about licensing. And you can hack on ct.js!
The repo is at https://github.com/ct-js/ct-js
Pro Tileset support
ct.js supports tiles in rooms, including collision checks and some extra editor tools, like bulk migration to a new tile layer or shifting by an exact value.
Pro WebGL and WebGL2 support
Starting with v1.0.0-next-1, you can now write WebGL games. WebGL support is based on Pixi.js.
Pro Modular approach
ct.js has a "Core" library that provides basic drawing functions, room and asset management, and mouse interactions. Any other functions are added to projects as "catmods", or simply modules. These modules can be enabled or disabled in one click, and can inject their code in different game loop stages, e.g. after drawing all the objects, leaving a room, or when a new object is created.
Pro Applicable to most genres
ct.js aims to be a general game engine and provides tools in making games of any genre.
Pro Dialogue and visual novel system with support for Yarn
A module ct.yarn allows developers to import a YarnSpinner project to create branching, data-driven dialogues and visual novels. An example is also bundled with ct.js.
The dialogue tree is made in a separate app, though.
Pro Real-time particle system editor
v1.3 brings a particle system editor, which displays a preview sprite for proper attachment of emitter to visual elements, and allows combining more than one emitter with different particles into one effect. With these, even the creation of complex, multi-step effects becomes easy. The editor comes with dozens ready-made textures for faster prototyping.
Cons
Con No 3rd party tutorials
There are little to none amount of tutorials for Felgo other than what was made by the engine developers themselves.
Con Tile editing is a chore
No live brushes with automatic corner drawing, no fills or rectangular/linear placement. All tiles should be placed by hand, with a "Shift" key to place multiple tiles at once. This will make you ragequit if you want to make sophisticated RPG scenes :D
Con Slower than native games
JavaScript and WebGL are fast, but they will always lose in performance if compared to native games, so it may be a bad choice for graphics-heavy games.