Pencil and paper: Great games don’t necessarily require great technology. Without the coding overhead, you can start refining your design skills immediately through board, card and pen-paper games (think D&D). You’ll learn to consider those various annoying details (stat tweaking, incentive/dissuasive placement, pacing, etc) that aren’t really that fun to think about but are essential to making your game fun to play.
Coming soon to Android, I believe
Relatively a ton of flexibility for a program with such a small learning curve
This is actually programming. However it’s very easy to learn after you’ve taken a basic programming class for the basics on loops, conditionals, and OOP
You can even use your HTML and CSS skills to make an ARG or point and click adventure games. Have the players start at one webpage, and they progress through the game by clicking links that lead to other webpages.