I just published MathsJack!
It's an HTML5 puzzle game inspired by blackjack and brain trainers where you count cards to break the bank.
You can play it here on Kongregate.
Two weeks ago I participate to the 24th ludumdare game jam, basically you have 48h to make a game with the theme "Evolution". there is the result...
Html5 and canvas element become very mature and it's perfect for for video game, I have create a minimal framework for gaming.