People who search for castle defense games usually want one of two things: something to play right now, or a recommendation for something bigger to buy. This list covers both. It starts with free castle defense games that run in your browser on this site, every one of which we opened and checked before listing it, then moves to the best on PC and mobile, with platforms, release dates and prices checked against Steam and the App Store in November 2026.
The short version
- Play free right now: the original 2011 Kingdom Rush runs free in your browser on this site, along with North Kingdom: Siege Castle and Epic Empire.
- Best on PC: Kingdom Rush 6: Genesis TD, the newest entry in the series (September 24, 2026), or Thronefall if you want to build your kingdom as well as defend it.
- Best on mobile: the original Kingdom Rush, free on the App Store and rated 4.8 from more than 77,000 reviews.
- Best with friends: Kingdom Two Crowns (two-player co-op) or Dungeon Defenders: Awakened (up to four players).
What Counts as a Castle Defense Game?
"Castle defense" covers three overlapping kinds of game, and knowing which one you want saves a lot of disappointment:
| Type | How it plays | Examples on this list |
|---|---|---|
| Kingdom tower defense | Enemies march along fixed paths toward your kingdom; you build towers beside the road and send in heroes. | Kingdom Rush series, Epic Empire, Defender's Quest |
| Wall defense | Enemies come straight at your castle wall, and you fight them from it with archers, spells or upgrades. | Kingdom Guards, Ancient Tower Defense, Grow Castle! |
| Kingdom builder with sieges | You build the castle or town between waves, then defend what you built when night falls or the army arrives. | Thronefall, Kingdom Two Crowns, North Kingdom: Siege Castle, Diplomacy is Not an Option |
If tower defense in general is new to you, our beginner's guide explains paths, range and upgrades, and our history of tower defense games shows how the genre grew out of custom maps in strategy games.
Free Castle Defense Games to Play in Your Browser
Every game in this section runs free on this site, with no download and no account. We opened each one in a desktop browser on November 8, 2026 and checked that it loads and plays; several "kingdom" games we tried turned out to be other genres or would not run outside their original site, so they are not here.
Kingdom Rush (the 2011 Original)
FreeBrowser Path-based kingdom defense
The original browser version of Kingdom Rush by Ironhide Game Studio, the 2011 game that started the series. Orcs, trolls and wizards march down fixed roads while you build archer towers, mage towers, barracks and artillery beside them, then call in reinforcements and rain of fire when a wave gets through. If you only play one game from this list, make it this one.
Play Kingdom RushNorth Kingdom: Siege Castle
FreeBrowser 3D castle siege defense
A low-poly 3D game about surviving a siege: you build walls, gather resources and place defenses around your castle, with both a campaign and a survival mode. It is the closest thing on this list to a browser version of Thronefall.
Play North Kingdom: Siege CastleEpic Empire: Tower Defense
FreeBrowser Heroes and towers on a world map
Plays a lot like Kingdom Rush: you move across a large world map, defending each stage with towers and heroes against waves of evil forces. A good next step once you have finished the original.
Play Epic EmpireKingdom Guards: Tower Defense
FreeBrowser Wall defense
Pure wall defense: you stand on the castle wall and command archers, aiming each volley at the knights marching toward your tower. Simple to learn, and a good fit for short breaks.
Play Kingdom GuardsKingdom Tower Defense
FreeBrowser Spell-casting castle defense
You play a magic king defending his castle with spells and skills instead of towers. Heads-up: the game switches to full screen when you press Play.
Play Kingdom Tower DefenseAncient Tower Defense
FreeBrowser Fortress gate defense
A side-view defense of a fortress gate: you fill ballista slots and use spells to stop each wave before it reaches the gate. If you like it, Fortress Defense is a similar game in which you place archers on the fortress roof.
Play Ancient Tower DefenseWant to attack as well as defend? Kingdom Attack is a card-based lane battle in which you send knights, witches and archers against the enemy, and Four Mini Kingdoms War is a pixel-art strategy game in which four rival kingdoms build up their bases and fight.
Want more than castles? Our library has 90+ free tower defense games, from classic Flash-era hits to new HTML5 releases, all playable in your browser.
Browse All Free GamesThe Best Castle Defense Games on PC
Release dates, platforms and list prices below come from each game's Steam store page as of November 8, 2026. Steam prices change during sales, so treat them as the regular price.
Kingdom Rush 6: Genesis TD
NewWindows, MaciOS Ironhide Game Studio · released September 24, 2026 · $19.99 on Steam, $6.99 on iOS
The newest Kingdom Rush takes the series back to the early days of the Kingdom: build towers, command heroes and stop Vez'nan's corruption, in the words of its Steam page. If you have never played the series, this is the obvious place to start in 2026; if you have, it is the first new mainline entry since 2024. Its iOS version was already rated 4.8 from nearly 3,000 reviews six weeks after launch.
Kingdom Rush (and the Rest of the Series)
Windows, Mac, LinuxiOS (free) Ironhide Game Studio · on Steam since January 6, 2014 · $9.99 on Steam
The game that defined modern castle defense: hold the kingdom against orcs, trolls and evil wizards with a set of towers and spells across forests, mountains and wastelands. The series continued with Frontiers, Origins, Vengeance, in which you lead the dark army, and Kingdom Rush 5: Alliance TD (July 25, 2024), which teams the kingdom's warriors up with that army. You can also play Kingdom Rush free in your browser on this site; our list of games like Kingdom Rush covers what to try after the series.
Thronefall
Windows, Mac GrizzlyGames and Mythwright · released October 11, 2024 · $12.99
Steam describes it in one line: "a minimalist game about building and defending your little kingdom." You build up the kingdom by day, with walls, towers and barracks, and defend it by night, charging into battle yourself alongside your troops. It is the best pick here for short sessions, and a paid expansion, Craaghelm, with new maps, weapons, heroes and units, is listed on Steam for November 11, 2026.
Kingdom Two Crowns
Windows, Mac, LinuxiOS $6.99 Fury Studios and Coatsink · released December 11, 2018 · $19.99
A side-scrolling "micro-strategy" game in which you ride along your kingdom as its Monarch, gathering coins and spending them on walls, towers, archers and knights to protect your crown from the Greed, monsters that attack at night. Two players can rule together as a pair of Monarchs in co-op.
Bad North: Jotunn Edition
Windows, MaciOS $3.99 Plausible Concept · released November 16, 2018 · $14.99
A real-time tactics roguelite in which you defend a string of procedurally generated islands from Viking invaders, positioning and relocating your troops to use each island's shape. Lose a commander and they are gone for good, which makes every island a small, tense castle-defense puzzle.
Diplomacy is Not an Option
Windows Door 407 · full release October 4, 2024 · $29.99
A base-building strategy game about raising your town, its walls and its towers, then holding off the hordes: its Steam page promises more than 25,000 enemies storming your castle. If you want castle defense on a huge scale, this is the one.
Stronghold Crusader: Definitive Edition
Windows Firefly Studios · released July 15, 2025 · $19.99
Not a tower defense game, but the original "castle sim": you design the castle wall by wall, then defend it and besiege 20 enemy lords. This 2025 remaster adds new units, opponents and campaigns. Pick it if building the castle is the part you enjoy most.
Defender's Quest, Dungeon Defenders: Awakened and Orcs Must Die!
Windows (all three) Level Up Labs (2012) · Chromatic Games (2020) · Robot Entertainment (2011)
Three different twists on defending a stronghold. Defender's Quest: Valley of the Forgotten ($14.99, also on Mac and Linux) is a tower defense and RPG hybrid in which characters who level up and learn skills take the place of towers. Dungeon Defenders: Awakened ($14.99) mixes tower defense with action-RPG combat for up to four co-op players. Orcs Must Die! ($9.99) puts you inside the fortress as a War Mage, defending 24 fortresses with traps, weapons and spells.
The Best Castle Defense Games on Mobile
Prices and ratings below are from the US App Store on November 8, 2026.
- Kingdom Rush (free): the original, still rated 4.8 from more than 77,000 reviews. Kingdom Rush Frontiers and Vengeance are $0.99 each, and Kingdom Rush 6: Genesis TD is $6.99.
- Grow Castle! (free): a pure wall-defense game in which you upgrade a single castle and the heroes standing on it as enemy waves charge in. Rated 4.5.
- Days Bygone: Castle Defense (free): an endless wall-defense game in which you grow your castle and recruit heroes, with idle gains while you are away. Rated 4.8 from about 2,500 reviews.
- Kingdom Two Crowns ($6.99) and Bad North: Jotunn Edition ($3.99): the full PC games, ported to phones.
Which Castle Defense Game Should You Play?
| If you want… | Play | Where |
|---|---|---|
| Something free, right now, with no download | Kingdom Rush, North Kingdom: Siege Castle or Kingdom Guards | Your browser, on this site |
| The classic, polished experience | Kingdom Rush 6: Genesis TD or the original Kingdom Rush | PC, iOS |
| Short sessions and a kingdom to build | Thronefall | PC |
| Co-op with a friend | Kingdom Two Crowns, Dungeon Defenders: Awakened | PC (and iOS for Kingdom Two Crowns) |
| Huge sieges with thousands of enemies | Diplomacy is Not an Option | PC |
| To design the castle yourself | Stronghold Crusader: Definitive Edition | PC |
| A one-thumb game on your phone | Grow Castle! | Mobile |
For more beyond castles, our ranking of the best tower defense games on Steam covers twenty PC picks across every style, and our best co-op tower defense games list has more to play with friends. Prefer fighting the undead? See our best zombie tower defense games.
Ready to hold the walls? Kingdom Rush runs free in your browser on this site, with no download and no sign-up.
Play Kingdom Rush Free