This is an image from my game "A Villain's Demise". It displays various WebGL effects used whenever the player has 1 life remaining. The technology used is HTML5 and javascript, with the primary target platform being desktop browsers.
This is of great contrast to the actual look of the game. These effects, combined with an impactful audio design really puts the player on the edge.
A lesson learned from this project would be not to slap-on features because "it looks cool". Originally, the player could slow down time, enabling various WebGL effects, and of course, slowing down the time. However, this feature ended up being a "slap-on" thing, that were utterly useless, and proved to be very counter-intuitive. It generally made the game harder, and did not add anything of significance to the game.
The project emerged from Ludum Dare 48 about a month ago, where i created the game within 24 hours. You can play the game here, if you'd like!
Click here to view the iotd