Protect your city from hostile alien attackers. Make sure to grab shield energy, and weapons that they leave behind, so you don't get caught off guard by the improved, faster aliens that follow.
Game type: 2D shooter.
Upgrade: Added sound mute, minor bug fixes.
Last updated on 2016年04月02日
此版本包含小幅錯誤修正和一般改善。請更新至最新版本，以獲得最佳體驗。
