Super Grav update v1.3.7 adds some new Leaderboard and Achievements features: In-game Achievements / Stats page:
All Leaderboard entries now show dots to signal if the score was in multiplayer - great if you like watching others' MP co-op / race replays:
The reason for the dots is multiplayer online replays can be pretty hilarious so this is an easy way to find them, eg when someone gifts a life in co-op mission to their buddy who then proceeds to go and 'accidentally' shoot them :D

Super Grav update v1.3.7 adds some new Leaderboard and Achievements features: In-game Achievements / Stats page:
All Leaderboard entries now show dots to signal if the score was in multiplayer - great if you like watching others' MP co-op / race replays:
The reason for the dots is multiplayer online replays can be pretty hilarious so this is an easy way to find them, eg when someone gifts a life in co-op mission to their buddy who then proceeds to go and 'accidentally' shoot them :D

Features:

• Pixel-perfect collision detection and super smooth 60fps gameplay
  
• Single-player Mission and time trial Race modes
  
• Local multiplayer split-screen up to 4 players, in either co-op or versus Mission mode, and Race, Dogfight or Pod Hunter versus modes
  
• Steam Leaderboards and Achievements - compete with friends for the best Mission scores and fastest Race times and watch their full replays
  
• Steam Cloud Saves - progress and all 'local' scores and replays are all sync'd in the cloud
  
• Textbook 1, 2 or 3-Star rating on each mission - aim to 3-Star all missions individually and ultimately all in a single run
  
• 27 Mission maps, 9 Race maps, 3 dedicated Dogfight maps, plus a bonus of all 9 original Gravitation maps + more
  
• PowerUp Pods offer weapon upgrades such as triple shot and rapid fire, or strike an opponent with a Negative PowerUp such as reverse steering or gravity!
  
• Watch full replays of the action at any time, with automatic saving of record-breaking Mission and Race replays
  
• Lots of configuration options in versus modes, such as disabling weapons and ship-to-ship collisions which is great for really pure racing
  
• Handicap system: add weight or weapons to help balance versus modes for differing player skill levels
  
• An original chip tune music soundtrack by DaveDexterMusic
  
• Supports lots of popular game controllers

Game Modes:

• Mission - Find and return all crates back to their bases - playable in single-player or multiplayer in either co-op or versus mode
  
• Race - Race laps around the caverns through the gates against the clock - playable in single-player time trial or multiplayer race mode
  
• Dogfight - Multiplayer deathmatch mode
  
• Pod Hunter - Multiplayer PowerUp Pod scavenge

• OS: Ubuntu 10.04 or SteamOS
• Processor: 2GHz Intel Core 2 Duo or AMD equivalentMemory: 2 GB RAM
• Memory: 2 GB RAM
• Graphics: NVIDIA GeForce GTX 280 or ATI Radeon HD 4850Network: Broadband Internet connection
• Storage: 256 MB available space

• OS: Ubuntu 16.04 or latest SteamOS
• Processor: 3GHz Intel Core i5/i7 or AMD equivalentMemory: 4 GB RAM
• Memory: 4 GB RAM
• Graphics: NVIDIA GeForce GTX 570 or ATI Radeon HD 7850Network: Broadband Internet connection
• Storage: 1 GB available space