Neither have I.
I don't understand why it has been mentioned.

Hehe, I like it.
Though, I've never played Commander Keen...

Holy craaaaaaaaaaaap you're a Commander Keen fan too? That's my all time favorite game, that's the game that ot me into gaming, which got me into computering which got me into pixeling so if it weren't for Commander Keen, I wouldn't be saying this right now! And you should really get someone to make this game. Hell I'll do it, just let me polish up my game making skills. Well... Maybe.

 Wow, thank you very much!

 I moved the "BIG" down two pixels, I didn't notice how it was hugging the border.

I exported it as a .mov originally, saw its filesize and thought "the .gif would be HUGE" but apparently not, it's tiny! Thanks for that, I guess the small pallet must help.
I've uploaded it now. It's a bit slower but less of a hassle to see.

I don't think it'll go beyond a mock-up since I have no coding knowledge in anything that could create a game so there's not much oppertunity for it. I'll probably continue working on stuff for it though in case I ever get a chance.

In fact the dimensions were chosen to fit my brothers phone, maybe I'll create a mobile game some day!

Neat dithering style and colour selections. It really reminds me of the later Commander Keen games. The only thing I'd do with the text is give it a little more space between it and the border.

 Animation was also quite smooth, but I'm surprised you couldn't upload it as a gif...it shouldnt be THAT large.

Keep us updated on the game! Will it go beyond the mock up stage?