This is a 3d simulation game.

Player will be falling off a cliff, into the dark.

Player can look around while falling or move right/left. There will be bones anywhere(human, animal, etc.). Each time player finds one, there will be a piece of paper/letter showing up onto the screen. The words on the paper/letter are the words in that live being's mind just before death takes him/her away. The last words of a life. There will be hundreds/thousands of them lying in silence, waiting for someone to discover them.

Once player finishes the letter (press any-key), it will disappear. There is no way for that player to read it again (other than replay the whole game and try to find that creature's remains again which is almost impossible). It is a once time experience. No tuning back. No regret. When player passes something, he/she will pass that thing forever. Yes, player may use tools to take picture or screenshot a scene of the game. But it will never be the same. The experience, that second will be gone forever.

Eventually, player will finish the game. Just before everything ends, player is given a limited time to write down whatever is in his/her mind (imagine this is the end of life). The words will be post onto the game site (with name or anonymous) and will be used in the game (if player agrees).

Anyways, life is just like falling off a cliff:)