UPDATE:

Download Diamond Hunter:
http://194.20.52.29/diamondhunter.zip

Some fixes:
-removed the space bar keypress to catch diamonds (now automatic)
-added some animations (rocks make dust falling, points when catching diamonds etc...)
-added PgUp/PgDn to enable/disable music
-slowed down a bit
-more diamonds
-less rocks
-changed menu (GAME A, GAME B but only GAME A available)

bit too little diamond hunting and a too much rock dodging. Constant random rock throwing is a bit annoying and there are situations where you just can?¢_Tt escape, especially with those fast rocks. Maybe instead of appearing out of nowhere, rocks should be thrown by someone or something, so the player can predict where they?¢_Tll be falling.
I'll study something to make it funnier, but I'm thinking about addons like
helmet to protect from rocks, different diamonds and so on. I'm still
working on it at least

Bye

PS: Soon all my games will have online highscores!