Glikwizz the tinkerer
One player selects the concept that will be guessed.
One player gives the clues.
Everyone else guesses.
The player that is selecting the concept is trying to select one that he/she thinks will NOT be able to be guessed. This player will get three points for a level one concept that is not guessed. Two points for a level two concept not guessed and one point for a level three not guessed.
The player that is giving the clues is trying to get one of the other players, not including the player that selected the concept, guess correctly the concept the was selected for him. This player will get one point for a level one concept correctly guessed. Two points for a level two correctly guessed and three points for a level three.
All other players are trying to be the first to guess correctly the current concept. The first player to correctly guess gets two points.
The first individual to 15 or 20, or whatever total you want, is the winner.
Alternatively, for smaller group counts, the winner can be the one with the highest score after each player has a chance to select a concept for each other player to give clues to.