
Build an unparalleled tower defense kingdom in "Skyline Defense"! With your strategic wisdom, construct defense towers, develop the economy, and withstand the fierce attacks of the enemies. Multiple difficulty levels of battle modes. Join now and start your sky island tower defense journey!
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
In distant mythical times, countless skyislands floated in the sky, miracles held together by ancient magical and elemental powers.
And you will be the reborn prince of the Pumpkin people, building defenses and traps against enemies. Build our home, revive our economy, and restore our kingdom to its glory!

The whole royal city has been almost reduced to ruins by the torrent of history. Bulldoze those ruins and wastelands and turn them into people's houses and farmland!
Urban construction is something that must be done. Building and developing the residential buildings of the city will make your city more prosperous and beautiful.




An arrow tower? The lightning tower? The Sorcerer's tower? Trap? If it works, build it!
However, if we are to defeat these monsters, we may need "a little financial support"!
We have a total of 8 types of defense towers, and we also have many "variant buildings". You can use the power of magical items to transform these otherwise ordinary defenses.




The kingdom was once full of glory, but it faded in the wind and frost. But these ambitious enemies will not rest there, whether they are monster or air bandits, we must not let them near the heart of the island!
There are as many as a hundred kinds of monsters, each with extremely unique characteristics. When we venture in different regions, we need to find ways to fight against various enemies.



Do you remember the magic you used in your lifetime? Perhaps not much impression, but it doesn't matter, driving the kingdom of the skyisland adventure, find those lost things!
Oh, right! You have to accumulate magic to be able to use powerful spells, it is common knowledge in the world!
Lowest tracked price: CA$3.89 (Jul 7, 2026) · current best: CA$12.99.
100% positive reviews all-time.
Right now the cheapest offer for 天际防线:空岛传说 is CA$12.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for 天际防线:空岛传说 is CA$3.89 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
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