Juice isn't exactly based on a new idea, being one of the Q'Bert-type "jumping on
squares to change their colour" games. However, this has been reworked sufficiently to
make it interestingly different. The blocks have been replaced by flat chessboard-like
playing areas (sometimes with holes in), and the characters altered.
Juice has an electrical theme. Your character has to complete a circuit from one corner to the
other by jumping on each square. Baddies have to be avoided; Killerwatt pursues you until you
lure him to his death. Flash will undo your work as he jumps about, and jumping on Recharge
freezes the baddies for a while.
Every now and again, the successful player reaches a bonus screen with no baddies. Here you
have to complete the circuit between the opposite corners within a time limit, rather than
changing every square.
I occasionally had trouble keeping my character under control, but overall this is a nice
variation on the theme and I enjoyed it.