I've been developing video games, toys, and tabletop games for over 30 years. BattleBusTD Arcade is my first solo video game project. It's like a handcrafted, one-off rocking chair ;).
I did all the art in...<drum roll> Power Point! Yeah, all those years of making presentations finally led to something useful! ;)
I also wrote/performed the music (played the drums/bass/keys/guitar) in Logic Pro. Up the Irons!
Most the coding I...err...borrowed :) from tutorials and then supplemented with some outsource help.
And then I spent...6 months making splines for ~20 enemies over 34 levels. Beat the game and I'll buy you a beer!
BBTDA is ultimately a prototype for a larger game :). Hopefully one day I'll get the chance to really make it!