Got this idea when I read a gaming magazine, which had an old preview of Crysis 2. There are some differences between the release version of Crysis 2 and the beta, alpha and preview, so I thought that we could try to gather list of differences of what we had seen before Crysis 2 was released. So, lets list!

- Smoke grenade was apparently already included in the game (Preview)
- You earned dog tags with skill kills (Preview)
- One of the armor modules prevented the player from being instantly killed due to a headshot (Preview)
- Nanovision was an unlockable feature, which showed where cloaked players had been? The gaming magazine told something along those lines (Preview)
- Melee was one-hit-kill (First Xbox 360 Open Beta)
- Jackal was single-shot only (Open Beta)
- Jackal could kill an armored player with a single shot from about 5-10 meters (Xbox 360 Open Beta)
- HUD was different (Preview, alpha)
- Very small amount of aim assist (First Xbox 360 Open Beta)
- Scar had silencer (Open Beta)

Does anyone remember anything else?