When comparing Buildbox vs Blacksmith 2D, the Slant community recommends Blacksmith 2D for most people. In the question“What are the best 2D game engines?” Blacksmith 2D is ranked 48th while Buildbox is ranked 51st. The most important reason people chose Blacksmith 2D is:
Automatically detects changes and updates bitmap cache. Allows to gain even more performance on heavy scenes and runs smoothly on old devices.
Specs
Ranked in these QuestionsQuestion Ranking
Pros

Pro Drag - and - drop editor
Drag - and - drop editor without writing any line of code.
Pro Easy to learn
Buildbox is a drag and drop engine, making it easy for beginners to pick up. There are many tutorials available to help get you started.
Pro Has many game templates
Buildbox has 20+ different game templates including templates for platformers, racing games and Flappy Bird clones.
Pro Built-in support for ads
You can add banner and interstitial ads from multiple ad networks, including AdMob, RevMob, Facebook. They can work with Amazon's, Microsoft's, Google's and Apple's app stores.
Pro Develop once publish everywhere
Exporting iOS/Android/macOS/Windows/Steam/Amazon
Pro Cross-platform
Pro Cache as bitmap
Automatically detects changes and updates bitmap cache. Allows to gain even more performance on heavy scenes and runs smoothly on old devices.
Pro Most valuable when size matters
All engine code is written in ES6, fully GCC typed, allowing to eliminate all dead code from your app.
Pro Advanced scene graph and rendering pipeline
Dirty flag tracks scene changes and avoids unnecessary calculations and context calls. If no changes were made to the scene since last frame, no rendering will be done. Battery efficient.
Pro Good performance
According to the tests on the Github page, the performance is better than in Phaser!
Pro Good and clear source code
The source code is well commented and easy to understand.
Pro Super small build size
Super small build size through dead code elimination. The best for playable ads and Facebook Instant Games.
Cons
Con Incredibly Expensive
$99/mo for full functionality probably makes this the least accessible piece of game development software in regards to price, all with a very limiting feature set.
Con You are restricted by it's limitations
For example, you can only make certain kind of games.
Con Not very powerful
You will be limited to using templates to build games.
Con Subscription Model
The two more reasonable price points limit the functionality of a software already far less powerful than many more cost effective alternatives.

Con Very expensive
Buildbox has a 15-day trial version, after that a $2675 license to use it must be bought.
Con Stability Issues
The software has stability issues on Windows, with the preview window causing program crashes when simple functionality is added.
Con Small community
The project is young, so the community is extremely small.
