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Throw Planes, Buy Upgrades, and Place Towers to defend against the oncoming waves of luggage! With 50+ unique upgrades to buy, discover new builds run after run. Unlock tons of froggy cosmetics in this Character Tower Defense!
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
Throw Planes, Buy Upgrades, and Place Towers to defend against the oncoming waves of luggage! With 50+ unique upgrades to buy, discover new builds run after run. Unlock tons of froggy cosmetics in this Character Tower Defense!
50+ unique upgrades, all with interesting synergies!
Ultimate Upgrades that add a twist to the endgame
7 unlockable levels spanning a range of difficulties
Tons of hats, skins, and planes to customize your character with
A couple of unique achievements for the insane!
Upgrades in the shop range from new towers, to health upgrades. Between waves you'll need to save up and purchase upgrades to get the job done. What you pick influences your Ultimate Upgrade options, so you can spec into certain areas!
Lowest tracked price: CA$1.62 (Jul 7, 2026) · current best: CA$6.49.
87% positive reviews all-time.
Right now the cheapest offer for air star is CA$6.49 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 air star is CA$1.62 (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.
Create a free price alert on this page and KingsPrice will email you when air star drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
