Let's Play in a Go... Toward the Light [Trial Version]
I've played flash games longer than this. But I still got a kick out of it... although I actually almost had to go for a change of pants on this one. Them cave dwellers, man.
Download:
http://www.thefuntastic.com/demo/toward-the-light/
Toward the Light is an atmospheric indie game set deep within a subterranean cavern. A rock fall has shut off the way from whence you came - and now you have no choice but to face the desolate darkness and find another way out. All alone, can you abate the dark before you run out of flares?
Quote from the Developer:
The game was originally created as an entry for the www.7dfps.org (7 day fps) game jam as one of many entries exploring the fps genre and what it actually means to be an fps. Starting a day late the game was actually built in only six days, and doesn't have much to do anything with being an fps! My intention was to explore various ideas for building tension and suspense - and I believe this is something many horror movies get very wrong. To this end my idea was to plunge the world into darkness and rely on sounds and an active imagination to get the job done.