Concentration game Pexeso, for one or more players.
HTML5 game, my old jQuery project. Couple of years ago it was published on Codecanyon for purchase, though it wasn't very successfull, just few sales. Anyway I think it has its uses, as entertainment game or as game for some prizes - for example in eshop, play the game with images of our products and win free delivery.
The game is not available for purchase on Codecanyon anymore - better, it's public, available for free under MIT licence, you can get it from my GitHub, there is also documentation included.