Day 1 - You as player are going to hospital to look for your friend that currently on hospital, But on your way there, an earth quake happen and you fall deep. You doing platforming ( With some mechanic like dashing, wall climb, etc. ) But you also have to keep your health as it get worse and worse the longer you spend time ( because you just fall like 10 miles far ), so that where Healing introduce i like to have the player encourage to keep moving and using healing mechanic which is just an item that you can pick ( i will change it later when i have better idea ), and also i will have a different difficulty ( w/o using healing mechanic ). The platforming will be dynamic ( a vertical,horizontal,diagonal platforming ). The game will have little bit story and also a plot twist. Also the game will focused on momentum.