Since acknex is directx based engine, i don't know how it can convert to android easly.

it is also not enough to convert to android. Many apis and plugins must be integrated. i am using corona sdk for 2d applications. Here are some plugins. (most important is Google in-app purchases)

Also google sometimes wants to update applications for security and similar reasons. Therefore, the engine must be constantly up-to-date so that necessary corrections/update can be made.

it is hardly realistic for me to expect an android export from this engine.

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