### Patch Notes:
- In Multiplayer building towers on the shared area no longer possible, only blockers allowed there.
- Clicking on players at the leaderboard enables you to add them as Steam Friends.
- Reduced tower upgrade cost, to fully upgrade a tower costs now 340, not introduced in singleplayer until next week.
- Fixed a bug which sometimes stopped multiplayer practice from starting.
- Some visual fixes and polishing.