Hey Doc, welcome to Lab Lights 2, a challenging puzzle game all about powering lights. For each room, you'll be pushing around blocks, and forcing various mechanisms to interact with each other in such a way that all of the lights turn on, and the door can open.
"Basic game rendering and logic" means that the game is past the planning and engine coding stages. There are very few render issues to address (optimizations will have to happen though). The basic game logic is mostly ported from Lab Lights 1, however a lot of it was revisited and improved in preparation for all of the interesting 3 dimensional mechanics.