• new story mode
• new survival mode
• the island was enlarged with about 20%
• 17 new creature types, now there are more than 30 in total
• more than 30 new craftable or buildable items
• map
• modified, real-time intro scene
• voice acting in 2 languages: English and Russian
• more than 50 Steam achievements
• options menu (quality settings, key remapping, inverting mouse, volume settings, etc)
• improved performance

The game got several major updates since the release that enhanced the performance drastically.