City Siege 4: Aliens Siege

City Siege 4: Aliens Siege

Game Details

Developer:
Released:
2012
Added:
May 2026
Technology:
Flash (emulated)
Platform:
Browser (desktop, mobile, tablet)
Wiki Pages:

City Siege 4: Alien Siege is a tactical action shooter where the battle moves beyond Earth and into a dangerous alien world filled with hostile creatures and heavily defended enemy bases. Commanding a squad of specialized soldiers, your mission is to rescue survivors, eliminate alien threats, and complete objectives across destructible environments packed with hazards and explosive combat.

Each unit in your team has unique abilities and weapons, allowing you to approach missions in different ways. Some soldiers excel at heavy firepower, while others are better suited for precise attacks or mobility. Choosing the right character for each situation becomes important as enemy resistance grows stronger and the levels become more complex. Careful aiming also matters, since civilians and allies can easily get caught in the chaos.

City Siege 4: Alien Siege combines arcade shooting with light strategy and humorous sci-fi action. The mix of varied missions, unlockable units, and destructible stages keeps the gameplay fresh while rewarding players who balance aggressive combat with smart tactical decisions.

Is City Siege 4: Aliens Siege Free to Play?

Yes, City Siege 4: Aliens Siege can be played online for free at FlashLegacy.