Guide Nessie and her giant tail around the loch using arrow keys. Dive using "d" and surface using "s", but be careful not to run out of air. Avoid boats on the surface, sharks at depth 1, and octopi at depth 2 slamming into parts of your tail (ouch). Instead, eat them for points and to relieve hunger (deeper targets mean more points). Eating boats makes Nessie grow longer, but biting one's own tail spells game over.

Note: IE doesn't like me (as usual). Have tested on Windows Chrome and Firefox. Mac Safari also is displeased, but Mac Chrome seems to be okay.

Have not tested on tablets, phones, or anything else.

BTW, fullscreen works better than inline. I couldn't find a way to just use fullscreen.