Crysis Warhead vs Portal 2
Crysis Warhead
Crysis Warhead is somewhat like a spin-off mainly because it doesn't really continue the plotline in the main Crysis franchise. Instead, I'd venture as far to say that this game might be a prequel to the original Crysis... maybe? Anyway, in this game, you play as Sergeant Sykes who find hismelf on a life-risking mission to retrieve a cargo that's incredibly important behind enemy lines during the Korean war. The gameplay in this game is amazing visceral and intuitive, and of course, between the suit's abilities and the wide range of weapons, you'll have multiple methods to take out your enemies and walk away smiling.There are also aliens of course - it's just Crysis being Crysis - but the enemy AI is a whole lot more intelligent and may just catch you off guard if you're not careful.
As great as Crysis Warhead is, the game can be a tad bit short for its full price. However, if you can get it during a promotion, the game will be very well worth the experience, the time and the price.
Portal 2
Portal 2 follows in the footsteps of the award-winning original while continuing the story of Chell and Glados. Now with both single player and a 2-player cooperative mode, Portal 2 ramped up its game with a plethora of new, challenging puzzles, a storyline that's a lot richer than before, and more advanced and realistic physics that will govern your gameplay. Interestingly, the game also includes editing tools, allowing players to create their own puzzles which can then be shared for all to enjoy.Portal 2 is definitely a much better game in the series and if you fancy giving this franchise a chance, you might want to jump straight to Portal 2.