Game url:
http://www.juegos10.com/juegos/juego/new-york-taxi-licence_14341.php

Hacks:
speed, invisibility, time

Game url:
http://www.el-juego-mas-dificil-del-mundo.com/

Hacks:
speed, the circles are very slow and gain level

Game url:
http://www.stick-combat.com/betatesters/play/#

Hacks:
1 2 3 4 5