Sand Wings ProtocolSand Wings ProtocolSand Wings Protocol

Every mission starts the same way: a fragile propeller plane, a single gun and a sky full of enemy squadrons. Grab the Power chips they drop and your plane grows through six tiers, from that little prop plane into a colossal heavy jet that fills the screen with fire.

Fly sixty missions across ten countries, over forests, ravines, deserts, coasts and mountain passes. Weave through dense bullet patterns, hold Focus to slow down and tighten your fire, and save a bomb for when the screen fills up. Two great bosses, the Fortress and the Leviathan, keep coming back in twelve marks, tougher every time.

Every run pays out Scrap, win or lose. Spend it in the Hangar on eight permanent upgrades, sixty planes and three kinds of bomb, then go back for gold medals, or switch to Ace when Pilot starts to feel easy.

No ads, ever. On phones and tablets the first country is free, with six missions and eight planes, and one purchase unlocks the full game. On Steam there's a free demo, and the full game is a one-time price. Upgrades, planes and Scrap are never sold for money.