If you want to play the game, BUY IT! ..or you can just download it from here: http://www.rom-gods.net/dote2.php?id=153 (Only if you already purchased the game, of course)
You can find and download the 100% completed CG saved game here: http://www.densetsu.com/download.php?show=saves&display=0-z
The game play is like the "UNO" game. Same number / Same color