I think for many of the games, its quite obvious as to how the main theme is incorporated. Also, since the theme is TAKE CARE, its pretty easy for someone to associate it to most games even though their interpretations may be different from the what the developer originally intended. I think its interesting to see this.
For my game, I think how the theme fits is quite clear. You're a Ninja stealing plans from an enemy Samurai camp while remaining undetected. So, you have to TAKE CARE so as to not get caught. It also incorporates the following challenges:
1) Extra History: set in the Sengoku period inspired by Extra History - Warring States - Ep #4. ( checkout the wanted posters! )
2) Extra Distance: if you stay close to a samurai for long or get too close, they will detect you and finish you off.
3) Extra Retro: I used this CGA palette for the game. ( except a darker shade on the pop-up menu)
If you have time, please check it out and leave some feedback.