Tip to find the code number for the power core round: switch the light off with the switch left to the colour coded door, use the colour crystal to change the light and return to the dark room, you should figure the rest out.
Arrrg! You should make the "sensitive" area a bit larger on the padlock for the acid. I was so frustrated and didn't know what to do, I was sure the acid should go there but it kept telling me "It is secured with a padlock, you need a key."
 "Feed the King"){kind=icon}
 "Plunder Mars"){kind=icon}
 "JellyGo!"){kind=icon}
 "Sad Asylum"){kind=icon}
 "The Last Element"){kind=icon}
 "Prism Core"){kind=icon}
 "Interlocked"){kind=icon}
 "Electric Box 2"){kind=icon}
 "Giants and Dwarves TD"){kind=icon}
 "Moon Waltz"){kind=icon}
 "Papa Louie 2: When Burgers Attack!"){kind=icon}
 "Elemental Power"){kind=icon}
 "Disaster Will Strike 2"){kind=icon}
 "Magnetized"){kind=icon}
 "This is not a minimalist game"){kind=icon}
 "Wonder Rocket"){kind=icon}
 "Super Duck Punch!"){kind=icon}