I’m not sure I should give away my “plan”, but:
The first year I was in the competition, I went for pure technology. My biggest focus was on getting a nice renderer going, then tried to fit a couple of games into it. I’m still really happy with how Dungeon4k turned out. =)
The second year was about gameplay only. I started by trying to make the game fun by adding as many addictive elements as I could; many levels, increasing difficulty, loads of sprites, a “creative” part to let the player play around. It worked very well for Miners4k, but Dachon4k (which I never officially entered) was never really fun… for some reason.
This year, I’m going for experimental/original gameplay. I don’t expect to win.