The drawing tool in the game and the anti-cheating systems are both things I created.
I'm impressed with your app. Instead of converting a bitmap to a pixel-by-pixel rendention (which people have done and it looks obvious) it re-draws it like a real drawing, picking one color at a time.
Paying users get a replay feature. It replays fairly realistically and that's difficult to detect as cheating.
Nice work!
Thanks, it's great to hear that from you. I was also going to implement the brush changing logic which would enable it to draw on large areas of single color with a big brush and further optimize other parts to make it even more realistic (detect shapes and draw them completely and draw over them like humans and so) but then I thought, that would ruin the fun. Actually I'm a paying user of the game[0] and never had the intention of ruining the fun for anyone, so I stopped. I'm a big fan of DoD and how it evolved.
Keep up the good work, and thanks for being nice =)