You can insert a flash game by a link to the game adress, you just have to copy this code by replacing with the information that you have:
<a href="http://www.flash-game.net/game/2910/shot-football-training.html">Clique here to play</a>
Or else, you can redirect to the game by clicking on an image, for this, just copy this code:
<a href="http://www.flash-game.net/game/2910/shot-football-training.html"><img src="https://2img.net/h/oi33.tinypic.com/34dho2c.jpg"></a>
<a href="http://www.flash-game.net/game/2910/shot-football-training.html">Clique here to play</a>
Or else, you can redirect to the game by clicking on an image, for this, just copy this code:
<a href="http://www.flash-game.net/game/2910/shot-football-training.html"><img src="https://2img.net/h/oi33.tinypic.com/34dho2c.jpg"></a>