- moving enemies (bats, birds etc.)
- gems for points
- split into different levels?
- based on depth
- more graphic variations for level
- music
- death
- pause, unpause
- music engine
- sfx channels
- new command bytes
- panning
- volume
- duty cycle
- intro sequence of player starting the descent
- lives?
- better, continuous rope (a la a certain frog fighting game)
- collision adjust?
- swinging offset
- pos
- speed?
- pausing can cause changes in momentum