Legendary Pokémon

Each time i finish playing a game like snake, instead of recording my score, it leads me to a "game not found" page and it says this:

THE FOLLOWING WARNINGS OCCURRED:
Warning [2] Cannot unset offset in a non-array variable - Line: 73 - File: games/submit.php PHP 5.2.17 (Linux)
File Line Function
/games/submit.php 73 errorHandler->error
/inc/plugins/games.php 437 require_once
/inc/class_plugins.php 101 games_index
/index 24 pluginSystem->run_hooks

Thanks for reporting this.
I expected it to be broken actually.
It's a tough fix since I'm not sure the plugin is still under development, but it will be fixed; it's just not exactly a top priority at the moment.