You can contact me to request one.
No. This is an all-new engine I created from scratch.
No. See previous question.
Javascript.
SixEngine can run in offline mode, but I have not made a full download available just yet.
Eventually, yes. The SixEngine library and online editing tools are still in development, but an early version of these tools is available to Patreon supporters at the "Create" tier.
This game engine was created from scratch in Javascript. It is not-for-profit and free of charge. SixEngine has no affiliation with Square-Enix, Nintendo, or any other commercial entity.
Fangame content created with SixEngine is entirely segregable and severable from the underlying game engine. SixEngine does not contain any previously copyrighted game code or assets.