here's some proof from the 3.3 beta devlog:
Keep in mind this release is *very* unstable! Save often, and expect major bugs.
- Added multiplayer (you can stop asking now!)
- Supports LAN play, over the internet and cross-platform with the upcoming PC edition
- Added ores to map editor
- Possible controller support (completely untested)
- Changed smelter system to use fuel and have a maximum speed/capacity
- New save system, import and export saves to local storage
- Added autosave
- Changed flak turret projectiles and speed
- Balancing of titanium and coal drills to be slower and more expensive, to slow down late-game progression
- Fixed bug with stacking conveyors and tunnels/junctions not transporting directly to the core
- Optimized pathfinding to be ~3x faster and use less memory
- Translation support (incomplete, full translations coming soon!)
- Teleporters now use power and have a better UI
- Sorters also have a new UI
- Added a sand resource (currently unused and unobtainable, but is displayed in the sorter)
- Re-made all player weapons to be more varied and interesting
- Removed upgrade menu and added the weapon factory block
- Increased base player health
- Discord integration: Wave, map and player count are now displayed in Discord while playing Mindustry
- Proper Mac and Windows32 support: not well tested, please report any problems!