5 levels, focus is on vertical movement. Everything is fast - hesitate and you're lost. (Elevators, for example, generally visit a level for a second or two - time the jump-off, or head back to where you started.
My second netpack, totalling 13 net levels for M2 and Infinity. These are more technically advanced than my first netpack, making for better gameplay. All maps work well with 2-8 players.