Sapper is a game project I  worked on as a level designer and sound designer. Started in with a team of 6 other students, the concept is to create chain-reactions to solve puzzles and reach the flag on the map. Available on steam December 16th. 

Steam link:

Here is the facebook page I hold for the game:

While creating the game design document. We at first asked our programmers to create a tool to edit levels in cube grid and save them. We then transformed that tool in a fully functional in-game level editor

That editor was our main level building element. We could take every paper design we had and test it in a minute.

Below is an example of a chain-reaction in video :