When comparing Rainbow vs FlatRedBall, the Slant community recommends FlatRedBall for most people. In the question“What are the best 2D game engines?” FlatRedBall is ranked 43rd while Rainbow is ranked 74th. The most important reason people chose FlatRedBall is:
Just check the commit frequency on github :) https://github.com/vchelaru/FlatRedBall/commits/master Plus Victor takes community input seriously and is known to shift around priorities based on the pressing needs of the community
Ranked in these QuestionsQuestion Ranking
Pro Open source
Distributed under the MIT License.
Pro Written in modern C++, is scriptable in Lua
With support for Android, iOS, Linux, Mac OS X and Windows.
Pro Optional FMOD audio engine
Pro Supports Spine
Box2D integrated with Lua bindings.
Pro Continually improving and open source
Just check the commit frequency on github :)
Plus Victor takes community input seriously and is known to shift around priorities based on the pressing needs of the community
Pro Very easy to use
Simplifies routine tasks such as adding entities and files to the game, or tuning parameters, via the FRB Editor called Glue
Pro Great community
Very active chat on gitter: https://gitter.im/vchelaru/FlatRedBall
Victor (the creator of the engine) is available throughout the day to answer questions and solve any problems that may arise, along with the rest of the community members who are ready to assist in any way they can.
Pro Extensive documentation
Very good documentation not only regarding the API details, but also lots of tutorials covering different aspects of using FRB, either on the code-side or on using any of its tools.
Con Not as feature-rich as other engines
Con Small community
Being fairly new on the scene, there aren't much of a community to speak of.
Con The editor's UI looks dated
Although functional, doesn't look as flashy as Unity for example, which may put some people off.