Games like S.T.G.

Here are some great alternatives to S.T.G. by DaimonSoftware :
LinearShooter Remixed
LinearShooter Remixed
★4.8
SKY SOLDIERS : Retro Shmup
SKY SOLDIERS : Retro Shmup
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Pixel Shooter Infinity
Pixel Shooter Infinity
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Dead Gunner
Dead Gunner
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Bricks Breaker Mission
Bricks Breaker Mission
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Shooting King
Shooting King
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Dissolve
Dissolve
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Sky Defender
Sky Defender
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Tengai classic
Tengai classic
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Bricks Breaker Origin
Bricks Breaker Origin
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Galaxy Airforce War
Galaxy Airforce War
★4.1
Shadow Gun: Epic Shooting War
Shadow Gun: Epic Shooting War
★4.6
Last Gunner
Last Gunner
★3.9
Mazinger Shooting Gallery Game
Mazinger Shooting Gallery Game
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Gun War Survival TPS
Gun War Survival TPS
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Particle Arcade Shooter
Particle Arcade Shooter
★3.9