Sorry to hear , but the thing we have to face is that TI-Nspire BASIC makes it extremely hard to add any graphics and interactivity, so it slows down development a lot. Have you considered trying to learn Lua?

This project is not dead, but many of you may not be aware of this project. Battle of 16s was a project I started in 2010 and gave up when the graphical limitations became too much of an issue. It is however, pretty much dead on TI-nspire basic. Its future is in a Lua version, but my overall idea for implementing the concept of 16 has changed and if I am ever to restart development in Lua, it will be very different to the Basic version.