Lemme just say one thing, it needs improvement.
Like for an example:
1)Add more sprites,
2)Fix more bugs,
3)Make it accessible to any window (Mac OS, Linux, Windows 7+, etc)
Wow. This is the most unhelpful feedback I have seen in a *very* long time.
1) When you say "add more sprites" please be more specific.
2) Please tell us more about what bugs need to be fixed.
3) Porting to other operating systems is very difficult, especially with an application with complex. Be patient.