Thanks! I’m glad you like the game.
The Offline Browser version of Succubus Stories is compatible with the JoiPlay app (no plugins are required, just the main app), though you will need to make a few adjustments in the settings, including probably setting it up to play in portrait mode. Note that I have not personally tested the entire game in JoiPlay, so you may encounter bugs and other problems, but it does seem to work fine based on the testing I have done. The web version is also mobile friendly, and should work on most tablets and smartphones. Portrait orientation is recommended.
A proper Android APK is possible, but is very low on my priority list given that it’s only a slightly better solution than the other two. Probably when we get closer to a 1.0.0 release I’ll begin experimenting with support for additional operating systems and platforms.