nice work
The game ran really smoothly and I enjoyed it but I wish your ship would move a little faster, since I missed alot of enemy ships. Also, maybe you should add more lives to make the game a little longer. I died and got a game over during my first boss. On the whole, it was really fun and keep up the awesome work!
AWESOME but not the actual 'Portal'
This game is really fun and enjoyable but it hasn't got the creepy atmosphere and story as the 'real' portal like those writings on walls stating that 'the cake is a lie'. But with over 30 levels of flash game play, its certainly much longer than the actual portal. Its certainly a mind bender and you've done terrific to make a flash equivalent of a PC/console game.
Challenging but Entertaining!
I thought the game was a little hard for me but its really addicting and really FUN!
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Female
a
Joined on 6/23/08
Space Wing 
Portal: The Flash Version 
Alien Hominid