REDCON
David Peroutka
Games
Order your crew to extinguish fires, repair and operate machinery, and repel intruders.
Free
Finding alternatives to
Top 20 Alternatives
Curated apps similar to Fortress Under Siege, ranked by relevance and user ratings.
SAS: Zombie Assault TD HD
Ninja Kiwi Limited
Games
Hordes of undead are approaching! Your mission is simple - throw everything you have at them and stop them in their tracks. Deploy your elite soldiers, automated turrets, and defensive barriers in strategic locations throughout each unique map.
Free
Last Hope TD
Build towers, defend bases, defeat zombies
JE Software AB
Games
Play a 3D tower defense game set in a post-apocalyptic world. Build and upgrade towers to defend against zombies, raiders, and other threats. Choose from multiple heroes with unique skills and gear.
Free
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#4 
Cross Fight
IEC GLOBAL PTY LTD
GamesPrepare your troops to fight in the most fierce war at the crossroad. HOW TO PLAY: • Tap at the right time to let troops start fighting and avoid being crashed by cars. • Buy new troops to win the war, merge them to get stronger. • Be quick as the barrier will be down when time is up. • Be...
Free -
#5 
Dungeon Defense : The Gate
GameCoaster
Games※ Introduction Defeat all invaders to defend your dungeon! Collect more weapons and monsters to make them stronger. Enjoy various contents such as "dungeon building, collect various weapons, achievements" ※ Story In order to defend the last remaining dungeon of this world, you became a...
$0.99 -
#6 
Idle Arrows - Merge Game
Gameguru Advertisement FZC
GamesYour castle is overrun by terrible monsters. As the protector of your castle, you are called upon duty to reinforce your defenses by deploying weapons and upgrading them.
Free -
#7 
Archer's Adventure
Mintry Inc.
GamesYou have been deserted, the only survivor, our last hope. The fight against the evil forces and the future of the universe lies in your hands. Can you summon enough strength and courage to rescue the world from evil forces? A new era of RPG games has begun! Combine the fun of archery with...
Free -
#8 
Flaming Core
HABBY PTE. LTD.
GamesEnter a world of hackers. All your comrades have been hacked and now everything out there has only one mission: to obliterate you. Welcome to FLAMING CORE! Control your Core to defeat enemies and get to the end: the only way to restore order and save the world.
Free -
#9 
Simply Knights
Joeson Yu
GamesAn Epic Melee Warfare - Become a Knight! Split-second strategic combat! Master the key skills of melee warfare, positioning and timing Push your courage, wits, and sword skills to the limit.
Free -
#10 
Army War Camp: Battle Game
Freeplay LLC
GamesPrepare your army for a fierce battle to take back the lands your enemy has captured! Train your every soldier and lead your army into the heat of battle. Build army training locations and upgrade your military forces to win this war.
Free -
#11 
Final War: Frozen Defense
HaoPlay Limited
GamesA powerful dark sorcerer has opened the Gates of Hell, summoning a demonic legion. The balance of magic is crumbling, ancient walls trembling under the infernal onslaught. Knights! Draw your swords, defend the castle together! -A New Height in Puzzle Tower Defense More than a battle of defense and...
Free -
#12 
Last Legion: Tower Defense TD
Defend the city, build defenses, command heroes
Antares Games s.r.o.
GamesManage mecha waves by deploying turrets and traps. Command squads of defenders in campaign and raid battles. Collect and upgrade heroes to enhance combat effectiveness. Build high-tech defenses to protect the city.
Free -
#13 
Space Tower - Galaxy Tower TD
CYBERJOY LIMITED
GamesThis is a tower defense battle in the galaxy, and you’ve been appointed to be the commander. Choose upgrades and use your strategy to make it an indestructible tower.
Free -
#14 
Fort Conquer
DROIDHEN LIMITED
GamesDownload the @FreeAppDay.com App and wish for more top rated paid apps like Fort Conquer to become FREE for a day! Waves of monsters have evolved and are rushing towards your territory.
Free -
#15 
Tower Defense Generals TD
Command vehicles, defend territory, strategize attacks
GameSpire Ltd.
GamesDefend your colony by placing and upgrading towers to destroy incoming armored vehicles. Customize vehicle units, manage resources, and strategize attacks. Complete missions and unlock new units and abilities.
Free -
#16 
Tower Defense: Magic Quest
Cantalooza Games LLC
GamesEvil never sleeps, so be ready to protect magic land in the epic Magic Quest: Tower Defense! Hordes of evil creatures are invading the kingdom of mighty spells.
Free -
#17 
Idle Battle Warriors
迪文 陈
GamesYou are lucky to be the commander of an army. Start mining with the only miners and use the amethyst ore to train the units you need. Swordsmen, archers, giants, etc.
Free -
#18 
Defenders of the Realm !
PLAYTOUCH
GamesIn "DEFENDER OF THE REALM : an epic war", you must command and order your army of knights to defend your kingdom from monsters' attacks. Your ennemy is rising an army with hordes of powerfull creatures and magic spells, and just started to kill your people.
Free -
#19 
Kaiju Attack
GUAN LING WU
GamesKaiju appeared and the world is in danger.
$2.99 -
#20 
Royal Guardians
Mofish, Inc.
GamesOnce upon a time, a prosperous and powerful kingdom was suddenly threatened by a dark force. The evil forces invaded the kingdom, destroying the land and endangering the people.
Free
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