Top similar games like Under Siege:

You are military volunteer. what? you did not volunteer? It's too late! You are already in the middle of the battlefield. kill the alien for the humanity! Marine Survivors is simple action rogue lite game. kill aliens, earn exp gem, upgrade your weapon. unlock various collection.

Defeat thousands of enemies that are invading Andromeda! Andromeda Survivors is a casual game with rogue-lite elements where you collect skills and upgrades for your ship to create amazing builds!

Downcave is a Roguelite 2D Platformer. Descend as far as you can down various caves, encounter more enemies the deeper you go. Gain power from various artifacts and use your weapons to fight hordes of monsters.

Magic is Art. Draw arcane sigils & combine powerful upgrades to dominate an endless Tide. Meet other mages and unlock their abilities. Discover the secrets hidden inside the Magus Mansion. Raise your familiars & enjoy some tea.

Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!

La Furia de las Trenzas is a survivor-like roguelite where you'll face relentless hordes of British soldiers trying to capture Buenos Aires. Recruit your platoon of soldiers with special abilities and defend the town square! 

Hordes of monsters are threatening the Poly Village! Raise your weapons, choose your equipments and enjoy the battles……But be aware of those powerful monsters! Make full use of the environment and collect items continuously. Keep getting stronger until finally you defeat your enemies.

In Nine Lives Ninja: Survive you are a cat (who also happens to be a ninja) forced to fight for your lives against hordes of evil woodland creatures. Choose which abilities to focus on, which attributes to increase, and see if you can survive to fight another day.

Schematica is an action roguelike where every block has a function. Walls are walls. Bombs are bombs. Hearts are hearts. Enemies are made of them. The world is made of them. You and your bullet are made of them. Shoot your way through the world, collect new blocks and craft the perfect build.

Form a squad of elemental creatures and face hordes of challenging enemies! Choose your Shards according to their synergies to gain new abilities, and equip relics that will make the winds blow in your favor! Survive through different environments and save your lands!

Smash your way through endless waves of enemies and grow absurdly powerful! Grab loot, level up, unlock characters and upgrade to create unique and crazy builds as you fend off hordes of creatures!

Go on a campaign to dethrone the kaiser! Build an army, strengthen yourself with powerful artefacts and defeat the forces he sends to stop you. Kaiser is a casual roguelike game where you fight thousands of enemies in an attempt to become the new kaiser.

A time-limited survival game infused with rogue-lite elements and an adorable art style! The world has plunged into darkness, and you are its sole beacon of hope. Will you endure until dawn, or succumb to repeated deaths in your quest? Fear not, for you can collect more coins to arm yourself!

Unleash Mass Insect Extermination! Entomophobia is a casual Bullet Heaven with rogue-lite elements. Slay bugs, amass upgrades, and escalate your power against the swarms. Crush, upgrade, dominate – the insect reign ends with you!

Immerse yourself in Arcane Chaos, the ultimate magic-fueled roguelike. Mastering chaotic spells to vanquish endless waves of foes. Level up, enhance your powers, and experiment with fusing spells to unlock a myriad of potent combinations. Can you navigate the relentless chaos and emerge victorious?

Duriano is a top-down arena shooting Slasher roguelite game where the player will be a hero durian of the norse wielding a weapon to fight upon a god of norse mythology. From different weapons, Durian hero, God’s trail, items will lead the player to create a build and defeat all gods of asgard.

Fight the underground creatures of Argion to free the land from a curse. You have to fight your way through several dungeons full of dangerous creatures and bosses. Try to utilise, level up and combine many different weapons and passive items to stand a chance of defeating them all.

King Charles is a fast-paced survival arena game where you dodge endless enemy swarms, level up with card upgrades, and build unstoppable weapon combos—while miniboss waves arrive every 3 minutes for massive rewards.

"Fight off endless hordes of enemies with your ship! Upgrade it to defeat increasingly powerful opponents! Choose your upgrades carefully, manage your priorities, and find your enemies' weak points!"

Spell Defender is a 3D, Third-Person, wave defence, survival Roguelite. Use magical powers to defeat waves of enemies. Each wave rewards you with a choice of a new power. Find synergies and combine these powers to create the ultimate defender.

Weaponmancer is an action roguelite where you, a unique mage, summon weapons to fend off diverse foes. Navigate bullet-riddled challenges, adapt with every run, and harness fallen enemies' essence to evolve and conquer.

Blast Head is a fast-paced action roguelite/bullet heaven with absurd weapons, powerful runes, and non-linear weapon skill trees. Dive into 10–30 minute runs, discover wild synergies, and unleash chaos across alien arenas.

Cut down Thousands of enemies, from the undead to the mysterious creatures of the night to save the world from the impending doom, Rune Break is a Fantasy Rogue-lite where you fight hordes of enemies with casual elements.

Shoot & Sow is a top-down arena shooter roguelite, where players control unique characters and fight vegetables and fruits. Players can plant seeds to grow special items, as well as buy a variety of weapons and items. Complete the talent tree to gain more power. Can you survive on your own farm?

Grab your equipment, there are monsters to kill in the deep and narrow dungeons.

RANDOBOUNCE is a fast-paced, arcade, score-attack roguelike where you bounce uncontrollably while crafting the most ridiculous, overpowered weapon possible. Survive, rack up points, and let the chaos unfold!

Welcome to the world of Sculplings! Here, trainers collect and battle a random assortment of hand-sculpted monsters in order to become the #1 Sculpling Champion! Sculplings is a mashup of roguelikes with traditional monster fighter games!

SirVive is a rogue-like horde shooter where the goal is simply to survive as long as you can (looking fabulous while doing so!). Choose 4 of over 20 different abilities to bring with you on each run, and whether to activate them manually or automatically.

Fight against Hordes of Zombies, Skeletons and other creatures to survive as long as possible. Upgrade your arsenal and rescue other Survivors on your DESPERATE SURVIVAL.

Breachwalk Survivor is a single-player game combines survivor genre with inventory management. Before sneaking into another dimension, it’s better to plan which weapons to craft and strategize the path. Stealing just one 'World Core' will save your world, but there’s still extra space in your bag...