$1.99スクリーンショット
Steamストアより
Upgrade your weapon to destroy waves of enemies.
Fight your way through ongoing boss battles.
Defeat an onslaught of enemies to dominate the leaderboard.
Move around the energy source and protect it from incoming enemies.
If you collide with the enemies 3 times, it's game over.
A new enemy is added every 10,000 points.
A boss battle happens every 15,000 points.
Temporary weapon powerups appear every 2,500 points.
